Ati 4850 problems.

[Freshmir]

I just ended up getting the 4850 and am Having some problems. I installed the latest drivers using the hotfix. I did use driver cleaner to get rid of the old stuff. Anyways, the card seems to perform ok on the only game I have ran which is mass effect. But in 3dmark06 im getting very bad fps compared to 8800gts. On the first test im averaging like 20-25fps. I use to not drop below 30fps with the 8800gts and usually avg out 60-70.

All I can think of now is it might be a hardware issues but im not sure. Im looking for someone that has the card and would know anything about this and why it may be causing this and what to fix it or just get a new card.

[Cheator]

What kind of score are you getting? It could be shoppy from the P35 chipset.

[ratbuddy]

What kind of score are you getting? It could be shoppy from the P35 chipset.

Huh? How would P35 make it choppy?

[Freshmir]

5k score for card. Which is garbage for this card. Should do alot better.

[dmaaack]

this is making me have second thoughts about buying it...

[WorshipMe]

You said earlier that you couldn't completely remove the old drivers with driver cleaner, could this perhaps be the problem?

[Cheator]

Huh? How would P35 make it choppy?
PCI-E 16x provides the same bandwidth as an 8x PCI-E 2.0 slot. the 8x limits the 4850s at higher resolutions (by higher I mean starting at 1650x180, read some P35 and P45 comparison reviews). I've also encountered with with CF and no CFed cards on the P35. It seems to be a bandwidth issue.
5k score for card. Which is garbage for this card. Should do alot better.

That is WAY too low. A single 3850 could score higher... take it back to rule out the hardware.

[prpz]

same card stock speeds Mixmus Formula Q6600 Go at 3.4ghz memory at 1084 5-5-5-15
P7293 graphics score 6495 cpuz score 11740 if that helps anything.....Using Hotfix drivers and first edition on vantage no update :)

[OC101]

That is WAY too low. A single 3850 could score higher... take it back to rule out the hardware.

Not really a good comparison.

My X1950Pro beat that already! 5400 points here!

3850 would have double that amount.

His 4850 is getting only 1/3 of what it should get. Something is wrong.

[vixro]

PSU or bad driver install. A PSU unable to power the card (or forgetting to plug in the extra power source) or a bad driver install can cause these problems easily.


Or something as simple as a motherboard setting, where the lane speed got changed to 1x or 4x. You can use cpu-z to see if that got messed up.

[flopper]

pci-e x1?
instead of x16?

[Cheator]

pci-e x1?
instead of x16?

or PCI-E 0.25x

[dmaaack]

Just making sure its not the EP35 motherboard right?
I am supposed to be ordering that and this card soon.

[Freshmir]

All the settings are fine drivers are new and hotfix has been added. Like I said it seems to run games fine. I got mass effect maxed and no lag at all feels like at least 60fps playing the game. But the 3dmark score is bad.

EDIT: Gonna try bioshock now and see how that runs.

[Freshmir]

Just tried Age of conan with this card. Not very good results. So far I am pretty dissapointed in this card. I wish never got rid of my 8800GTS cause it was out performing this thing by a mile. I hope its just a issue and that the card can run better. One thing I noticed too in the game is that the fps bounces around like crazy never settles. Always bouncing and I mean by alot like 20 then 50 then 30 then 50 then 15 even though Im not changing the picture at all.

[dmaaack]

Just tried Age of conan with this card. Not very good results. So far I am pretty dissapointed in this card. I wish never got rid of my 8800GTS cause it was out performing this thing by a mile. I hope its just a issue and that the card can run better. One thing I noticed too in the game is that the fps bounces around like crazy never settles. Always bouncing and I mean by alot like 20 then 50 then 30 then 50 then 15 even though Im not changing the picture at all.

damn bro i hope you figure it out. that would suck if the card actually performs like that. i was looking forward to getting one.

[Freshmir]

Im reformatting right now. And will install everything clean to try it again. If its still **** after that I will exchange it tommorow for a diff one to make sure it isnt the hardware. If its still **** after that then the card is **** and I will go buy a 9800GTX+ for 200$ and enjoy my high fps again. I was gonna stay with nvidia too but so many people said positive things about this card from ati I guess I should of followed my gut. I want this card to prove me wrong but I dont know I will find out by tommorow though.

[deathman20]

Gotta be software or hardware issue. Surely if that was happening review sites would of posted on it already or others by playing games.

[Freshmir]

Just reformatted. Installing all the drivers now then will try mark again.

[Cheator]

Just reformatted. Installing all the drivers now then will try mark again.

Marks a good guy, he'll help you for sure.

[Freshmir]

Marks a good guy, he'll help you for sure.

Ya mark better perform better this time or the card might find itself under my foot.

[Freshmir]

Ok reformatting and reinstalling everything didnt help at all. This has to be hardware related. Will exchange it tomorrow.

[vixro]

Yea, it's not just something that happens to all 4850's, seems like a problem with the one you have. You never did say if it was running in x16 or not and not x4 or x1... You can check it with cpu-z.

[Freshmir]

x16 [http://img254.imageshack.us/img254/9916/25191037mr7.jpg (http://imageshack.us)

[Freshmir]

lol this is nice since the reformat my comp keeps freezing randomly due to a hardware problem. HMM I wonder which piece of hardware is doing this.

[vixro]

Could always be other hardware too...

[Badbonji]

Have you tried running the E8400 at stock speeds? Could be that playing up...

[WorshipMe]

Check the clocks in CCC. Is it speeding back up and coming out of energy saving mode?

[Hardin]

Show us a picture of gpu-z. It's not the cards fault. There's something else going on here.

[Freshmir]

Its not the other hardware I know that for a fact. Because it ran flawless with my other card. As soon as I put this thing in. I started seeing problems. Im going to exchange it now will tell you if the new one works better. If not im going back with nvidia.

[thideras]

Its not the other hardware I know that for a fact. Because it ran flawless with my other card. As soon as I put this thing in. I started seeing problems. Im going to exchange it now will tell you if the new one works better. If not im going back with nvidia.Yes, but this card may require more wattage from the power supply. Looking at your posts, you seem to be convinced that you don't want this card and are very reluctant to take help troubleshooting it. If you can get the screenshots like someone else suggested (GPU-z), we can help you troubleshoot this.

We can't help if you won't accept it ;)

If this second one doesn't work, there is something else going on.

[vixro]

Yes, but this card may require more wattage from the power supply. Looking at your posts, you seem to be convinced that you don't want this card and are very reluctant to take help troubleshooting it. If you can get the screenshots like someone else suggested (GPU-z), we can help you troubleshoot this.

We can't help if you won't accept it ;)

If this second one doesn't work, there is something else going on.

You could tell from the very first post he just doesn't want it to work. We all know the 4850 outperforms the 8800GTS heavily and he just can't accept that.

Sure the problem could be with the card but I have honestly never seen such a lack of regard for help other than to bash ATI every single chance he gets. I am confused completely on the original posters tactics here....

[Freshmir]

Ok I got the new card hooked it up. And no change still running like garbage in 3dmark06. Dunno what else to mess with now. I guess I will be ordering a 9800GTX since I can actually count on that to do a bit better than my 8800GTS and not do half as good as it like this crap. Now I know why I havent bought a ATI card since the 9800pros. Thanks for the help and advice guys.

I mainly wanted this card cause I heard so many good reviews about it and how it was suppose to beat out the 9800GTX in most things. But yet its doing half as good as my 8800. I had doubts and I guess they were right.

[thideras]

Now I know why I havent bought a ATI card since the 9800pros. Thanks for the help and advice guys. Are you not listening? If you got two cards in a row that act the same way, it isn't the cards fault! If you don't mind taking advice, read this thread over and at least ATTEMPT to fix it.

[Freshmir]

You could tell from the very first post he just doesn't want it to work. We all know the 4850 outperforms the 8800GTS heavily and he just can't accept that.

Sure the problem could be with the card but I have honestly never seen such a lack of regard for help other than to bash ATI every single chance he gets. I am confused completely on the original posters tactics here....



How do I not want it to work?? I would love for it to work and beat my older card It would make me very happy. Do you think I enjoy wasting my time reinstalling cards and going to stores to exchange and refund them? I would much rather have it work then have to deal with ordering another nvidia card from new egg and waiting for it to get here.

[thideras]

How do I not want it to work?? I would love for it to work and beat my older card It would make me very happy. Do you think I enjoy wasting my time reinstalling cards and going to stores to exchange and refund them? I would much rather have it work then have to deal with ordering another nvidia card from new egg and waiting for it to get here.Well, people have requested information and given suggestions and you ignored them. I would suggest re-reading this thread over.

Possibilities:
-PSU can't supply enough power
-Clocks are not set correctly (driver issue)
-Motherboard is running the slot too slow

[Freshmir]

Here is the GPU-z http://img98.imageshack.us/img98/9629/16033892mc1.jpg (http://imageshack.us)

[wingless]

Are you not listening? If you got two cards in a row that act the same way, it isn't the cards fault! If you don't mind taking advice, read this thread over and at least ATTEMPT to fix it.

+1 guy! Thideras is here to help so don't give up on your 4850 yet.

[Freshmir]

Well, people have requested information and given suggestions and you ignored them. I would suggest re-reading this thread over.

Possibilities:
-PSU can't supply enough power
-Clocks are not set correctly (driver issue)
-Motherboard is running the slot too slow


1: Corsair 550 is more than enough for this card to run. Runs a powerhog nvidia gupus fine not to mention the book that came with this said 450W was sufficient.

2: GPU-z Says the speeds are at what they should be.

3: My 8800GTS was running very fast. I averaged 60-70fps on the first lvl in 3dmark 06. I got 100fps outdoors in AOC and didnt drop below 30 in huge cities mainly around 45fps. So the mobo was obviously running it at the right speed.

[Freshmir]

+1 guy! Theres some issue going on with your system thats causing problems if you've used two different cards. How is it that you're the only person around having problems?

like I said I been trying to fix it all day yesterday. Even reformatted my whole system just to make sure its a clean install. I had about 2-3 hours of reinstalling to pay for doing this as well. So I guess I should try harder. I checked the drivers. I checked the hardware its hooked up correctly. I checked the core speed the pci speed everything seems fine. Also like I said it seem to run mass effect fine on highest settings. But in 3dmark06 its horrible results. But Its not just mark Age of conan runs like crap on it too. But most ATI cards run Aoc like crap.

[dribblesnort]

like I said I been trying to fix it all day yesterday. Even reformatted my whole system just to make sure its a clean install. I had about 2-3 hours of reinstalling to pay for doing this as well. So I guess I should try harder. I checked the drivers. I checked the hardware its hooked up correctly. I checked the core speed the pci speed everything seems fine. Also like I said it seem to run mass effect fine on highest settings. But in 3dmark06 its horrible results. But Its not just mark Age of conan runs like crap on it too. But most ATI cards run Aoc like crap.

Formatting your system was a waste of time. Congrats! That's what ya get for not posting the information requested and not listening to the people who have been trying to help you. I bolded the only correct part of your post.

By posting the GPUZ info it's pretty easy to see you're not using the new drivers that you "said you checked".

http://downloads.guru3d.com/ATI-Catalyst-8.6--Windows-Vista-Beta-(32|64)-download-1942.html

[Freshmir]

Those drivers are the vista hotfix drivers. The link you gave me is a leaked beta driver according to that site that ATI didnt even release. So im using the current drivers. But I will try them.

[thideras]

Those drivers are the vista hotfix drivers. The link you gave me is a leaked beta driver according to that site that ATI didnt even release. So im using the current drivers.Yes, but they are the 7.4's, those are really old. I would suggest using the download link that he just posted. :beer:

[Freshmir]

Installing them now will let you know.

[thideras]

Awesome! Hope they work for you! :)

[Hardin]

Where did you even get those old 7.4 drivers? You should always install the latest drivers.

[thideras]

It sounds like it was the initial Vista drivers? :shrug:

[Cheator]

It sounds like it was the initial Vista drivers? :shrug:

He said he got them from the CD that came with the card... which is odd. maybe it didn't install right? I dunno, I'm confused as to why they would have such old drivers there.

[Freshmir]

Ive installed the new driver but no difference. The only thing that changed in driver for gpuz though was it went to 7.14.10.0590. Anything else I should try

[vixro]

Ok I got the new card hooked it up. And no change still running like garbage in 3dmark06. Dunno what else to mess with now. I guess I will be ordering a 9800GTX since I can actually count on that to do a bit better than my 8800GTS and not do half as good as it like this crap. Now I know why I havent bought a ATI card since the 9800pros. Thanks for the help and advice guys.

I mainly wanted this card cause I heard so many good reviews about it and how it was suppose to beat out the 9800GTX in most things. But yet its doing half as good as my 8800. I had doubts and I guess they were right.

I've completely lost interest in helping this person after this post. :eek: If this isn't a completely obvious troll I don't know what is.



I will state this loud and clear. IF YOU GOT A SECOND CARD, AND IT STILL DOESN'T WORK, THEN ITS NOT THE CARD IF THE PROBLEMS ARE IDENTICAL.

[WorshipMe]

Ive installed the new driver but no difference. The only thing that changed in driver for gpuz though was it went to 7.14.10.0590. Anything else I should try
Did you install the 8.6 driver and then the hotfix, or did you just install the hotfix?

[Jon]

This thread is not about ATi vs. nVidia, so let's not make it one - that includes everyone. Opinions are fine, but this is a support thread. All comments, suggestions and/or otherwise will be in a support fashion or this thread will be locked.

For those that are frustrated with the OP and his prerogative to take advice or leave it - find another thread. Fleshing out opinions on the OP's behavior is trolling for a flamefest in its own right, so again - find another thread.

[petteyg359]

Ive installed the new driver but no difference. The only thing that changed in driver for gpuz though was it went to 7.14.10.0590. Anything else I should try

Don't know why the heck that driver got linked, you were already using the latest 8.6 hotfix according to your GPU-Z screenshot, and there is nothing newer than that. atiumdiag is NOT the Catalyst version, for whoever posted that link to an 8.6 beta. Hell, 8.6 is already released, the beta is OLD.

Make sure CCC hasn't forced any settings (make sure everything is set to application controlled).

[prime81]

I would say it's driver related, one thing I've learned over the last 10 years or so building puters is when you get new hardware.... always do a fresh format.

Just for example, I recently added a 3870 to my 3870x2 to utilize CFX. I was choppin up in games and things were just actin weird. I had uninstalled drivers 2-3 times and done everything possible to clear the issues up. I finally just backed up my stuff and did a clean format and the results speak for themselves.

http://www.its-inev.com/downloads/pics/19914.jpg

[vixro]

I would say it's driver related, one thing I've learned over the last 10 years or so building puters is when you get new hardware.... always do a fresh format.

Just for example, I recently added a 3870 to my 3870x2 to utilize CFX. I was choppin up in games and things were just actin weird. I had uninstalled drivers 2-3 times and done everything possible to clear the issues up. I finally just backed up my stuff and did a clean format and the results speak for themselves.

http://www.its-inev.com/downloads/pics/19914.jpg

he did a clean format already, I'd venture to assume a power supply with dropping voltages and not enough amps.

[cabose1227]

What are the temps? It may be over heating.

[Ric2L]

Not sure if this will help figure this out or not, I have the same drivers for my 3870's that you have. The newest CCC v8.6, & GPUZ shows up the same as yours. The 7.14.10.0590 is the Direct 3D version. See Screen Shot (circled drivers)

I would say that there is definatly a hardware problem somewhere, more than likely a PSU issue.

http://img165.imageshack.us/img165/4674/capturewq2.th.jpg (http://img165.imageshack.us/my.php?image=capturewq2.jpg)

[Janus67]

I am surprised that you are having such issues. The only major difference between your PC and mine is the OS (I'm running XP Pro SP3 32bit) and I'm not overclocked.



ran 3dmark06 this morning and got 17951 (http://service.futuremark.com/resultComparison.action?compareResultId=4340443&compareResultType=12)

Not sure what is wrong with your PC, but it is working fine on mine.

[WorshipMe]

I have an idea.

@ Freshmir, please can we see a pic of the 3DMark score with GPU-Z and CPU-Z open?

[UberNoober]

yea u should not be having a problem but i wont lie i did have a problem befor installing my 4850 its the Nvidia drivers they are not compatible with Ati of course but after i formated i installed all the latest drivers for every thing Mother board CPU, and Graphics it works great now i can play Crysis On Highest Settings on DX10 and i also tested it on DX9 and they bolth work great i get average 30fps drops to about 17 max, about 40 50 in small areas so in other word it runs sweet and i have a Amd 4200 X2 64-bit CPU and 2 gigs Ram and i seen benchmarkes where they get less with a better pc lol oh yea crysis 1.2 i am having Toruble Over clocking The 4850 tho it wont stay overclocked thats the only problem im having

[Aimz]

Searching the same problem with 3dmark06 score lead me to these forums. I believe Freshmir and I have similar issues, but his score is much lower than mine (I'm getting aroun 8k to his 5k) and he is running better specs (Mine is E6600@3.2ghz, 2GB ram, VT 4850@670/1050, X-Fi, PCP&C TC 510W SLI, Vista 64 Ultimate SP1). I'm running the 8.6 Hotfix (Only installed Hotfix driver after fresh Vista install). I don't believe it's a hardware issue as my XP scores (dual boot machine) are normal for this box at around 12-13k. In Vista the low score is the SM2.0 score where it's in the low 2k range in Vista compared to 5k range in XP (other scores are the same in XP and Vista). Tried reinstalling DX9 and 3dmark06, but no difference. In SM2.0 game test FPS in Vista is half of what I see in XP.

[anothermbdusted]

have you looked in your bios yet? making sure the pci e is set correctly? im grabbing at straws here on this one

[vixro]

Searching the same problem with 3dmark06 score lead me to these forums. I believe Freshmir and I have similar issues, but his score is much lower than mine (I'm getting aroun 8k to his 5k) and he is running better specs (Mine is E6600@3.2ghz, 2GB ram, VT 4850@670/1050, X-Fi, PCP&C TC 510W SLI, Vista 64 Ultimate SP1). I'm running the 8.6 Hotfix (Only installed Hotfix driver after fresh Vista install). I don't believe it's a hardware issue as my XP scores (dual boot machine) are normal for this box at around 12-13k. In Vista the low score is the SM2.0 score where it's in the low 2k range in Vista compared to 5k range in XP (other scores are the same in XP and Vista). Tried reinstalling DX9 and 3dmark06, but no difference. In SM2.0 game test FPS in Vista is half of what I see in XP.

510w PSU, look another PSU that probably doesn't have enough AMPS to power the card, so it randomly slows down or reverts to 2d mode depending on the demand. We are talking amps NOT watts. After you overclock your other parts or add all those other parts and you try to throw in an ATI card, the PSU is going to struggle more than it does with Nvidia. That's why you would notice drops in some games or apps and not others. Some have more demand and cause the GPU to draw more power and if the power isn't there the game struggles. I had this issue when I tried to crossfire to 2900XT's. Some games would run great, some wouldn't. Tossed in a new PSU and all those problems went away. Mind you that was a much more power hungry card and I had two of them, but the idea is the same.

[petteyg359]

vixro, a PCPC 510 has 34a on 12V (listed as 38a peak). A Corsair VX550 has 33a on 12V. Either one is enough for a single 4850 along with the system specs in OP's sig and Aimz's post. http://www.extreme.outervision.com/PSUEngine says one of the listed systems with a 9800GTX (tool doesn't have 4850/4870 in yet) would only need 314w, and only 20.3a on 12V, and I'm pretty sure a 4850 user less power than a 9800GTX.

[vixro]

Only 20.3 amps usage? The 2900XT used 28 as far as I know. So I figured it would have gone up. Still it sounds exactly like a driver or power problem, so that's what I'm sticking by until the cards are tried in a different computer with a stronger PSU.



In my view the Radeon HD 4850 series require you to have a 450 Watt power supply unit at minimum if you use it in a high-end system, and I think that's barely on the safe side. Also recommended is 30 AMP's on the 12 volts rails for stable power distribution (on a single card configuration). Notice that the card uses one 6-pin power connector.

There are many good PSU's available, over the years we reviewed a lot of them and have loads of recommended PSU's for you to check out in there, have a look. Things that can happen if your PSU can't cope with the load?:

bad 3D performance
crashing games
spontaneous reset or imminent shutdown of the PC
freezes during gameplay
PSU overload can cause it to break down


from Guru3d.

http://www.guru3d.com/article/amd-ati-radeon-hd-4850-review-force-3d--powercolor/7


Seems borderline to only have a few more amps than the recommended. Throw in some OC's on the card and the system and a few extra parts and there you are. Could have also forgot to plug in the 6pin, some mobo's let you without beeping/screaming at you.

There's also the issue of it not going into 2d/3d mode on certain apps correctly. That can be detected by running RivaTuner and watching the clock speeds on the monitor system on a second monitor (or recording the data to look at after the benchmark is done). It should go from 2dclocks to 3d and then stay that way and go back down to 2d only when the app is finally out of fullscreen.

[Aimz]

Same machine (Dual Boot) and the 4850 runs great in XP so power shouldn't be an issue. I play GRID on WinXP and at 1920*1080 4x AA and FPS is always around 60fps (limited by LCD) without issues. Only reason I installed Vista was due to how good the single 4850's performance in XP for the games I play. So installed Vista this week for DX10 and better CrossfireX support. I have 2 VT 4850's, but haven't put the second one in until I get my updated components (replacing the P5B Dlx with a DFI x38 so probably in for more tweaking, and PS in the 750w+ range). Odd thing with 3dmark06 score is the slow SM2.0 score only, the other scores were in line with XP scores so tried reinstalling DX9. The DX9 reinstall didn't help so I'm going to put back the 8800GTX to see if I see the same thing. If same thing happens then it points to a PS issue or some MB BIOS and\or Vista MB driver issue.

[prime81]

Ok I got the new card hooked it up. And no change still running like garbage in 3dmark06. Dunno what else to mess with now. I guess I will be ordering a 9800GTX since I can actually count on that to do a bit better than my 8800GTS and not do half as good as it like this crap. Now I know why I havent bought a ATI card since the 9800pros. Thanks for the help and advice guys.

I mainly wanted this card cause I heard so many good reviews about it and how it was suppose to beat out the 9800GTX in most things. But yet its doing half as good as my 8800. I had doubts and I guess they were right.

It is clearly your powersupply, and that mobo doesn't help as I believe it has a PCI-E x16 1.0 slot. It could also be a simple driver issue, did you do a clean format?

It doesn't necessarily mean the wattage of the powersupply... it maybe as simple as the amount of amps it's pushing to the card. I remember a buddy of mine who was having issues with crossfire, he had an Antec Quattro 850w I had an Enermax 720w... his should of worked correctly right? Wrong... his 12v rails weren't pushing enough amps, if I remember correctly my Enermax was pushing 28amps on all 3 12v rails, his quattro was pushin 18amps. Long story short, he bought a powersupply that had at least 25amps on the 12v rails... his performance issues dissappeared.

It's definitely something to look at when your shopping for powersupplies, look at the side label and see how many amps it's pushin.

[NewbieOneKenobi]

Guys, can it be a 2 lines vs 1 line issue? I currently have 2 12V lines plugged into my mobo, while if I plug just one, then it converts to single line from what I know... Never tried that yet. My card seems to perform fine and the fps in games seems to be good, but I have something like a double-start problem sometimes and my 3D Mark 05 score is lower than your 3D Mark 06 one. This is my signature rig.

[prime81]

I just read off my recently purchased Sapphire Toxic HD3870 box, it says boldly on the side... must have at least a 550w PS that has 38 amps total on the 12v rails.

[NewbieOneKenobi]

That would explain it. Argh. I have 20A each or 34A total.

[OC101]

12V rail amp
That must be it.

I checked around, all those 500W power supplies only have 18~19A on 12V rail. That's what you get for cheap. (500W PSU cost around $50)

The more expensive PSU such as 750W and above, have their 12V rail @ 60A and above. That's for high end gaming. And they cost $120+

His card must be not getting enough amp.

*****! And I was planning to buy 4850 soon. Just checked my PSU, 12v1 rail = 18A, 12v2 rail = 16A :( I was cheap too.

Video card manufacturers should have this requirements listed in specification. Or many people who don't have the correct PSU would "OMG the card sux!"

[OC101]

Guys, can it be a 2 lines vs 1 line issue? I currently have 2 12V lines plugged into my mobo, while if I plug just one, then it converts to single line from what I know... Never tried that yet. My card seems to perform fine and the fps in games seems to be good, but I have something like a double-start problem sometimes and my 3D Mark 05 score is lower than your 3D Mark 06 one. This is my signature rig.

What do you mean by double start problem?

I just got this 500W PSU, and every time cold boot will have my PC turn on for 2 seconds, then turned off for 5 seconds, then turned on again for good.

Are we talking about the same thing?

[jason4207]

I'm definitely a fan of the single rail design vs. multiple rails.

Some PSU's advertise multiple rails, and actually only have 1 rail, so do your homework.

[deathman20]

It is clearly your powersupply, and that mobo doesn't help as I believe it has a PCI-E x16 1.0 slot. It could also be a simple driver issue, did you do a clean format?

No the PCI-E 16x 1.0 slot won't be hindering it much. Yes there will be a slight performance drop but nothing on this calaber so forget the slot since we know its running at 16x.



As for power rails. While ideally yes its great to have 1 uber 12V rail, but as well its not nessisary as well unless your really pushing to get all the power out of the PSU. For example if you have 34AMP total and you have 2x say 20Amp rails. While one could use only 14AMP the other could use the full 20AMP, and so forth. The Video card uses... say 10AMP's (120W @ 12V).. well surelly there is enough power that its sucking a little from that PCI-E 6-Pin rail that it won't be affecting a thing in the system. Anyways off with the PSU issue since while it might be an issue but he was running a 8800GTS in the system which will use more power than the 4850 period.

When its not clocking high or getting a proper score first list to check out..
PCI-E Speed (Checked)
PSU Voltage under load (?)
Drivers (Checked with a reinstall and all)
GPU Clocks from Idle to Load (?)
GPU Tempature from Idle to Load (?)

Think there is 3 things that need to be checked still.

[NewbieOneKenobi]

12V rail amp
That must be it.

I checked around, all those 500W power supplies only have 18~19A on 12V rail. That's what you get for cheap. (500W PSU cost around $50)

The more expensive PSU such as 750W and above, have their 12V rail @ 60A and above. That's for high end gaming. And they cost $120+

Mine was a $250 500W PSU... Then again, I don't get oh-so-serious problems. But I wasn't able to complete 3D Mark 2006 with the settings Auto Tune (from Catalyst) detected.

His card must be not getting enough amp.

I remember a 480W PSU with 12A on the 12V rail. I couldn't even start an Athlon 4000+ on it.

*****! And I was planning to buy 4850 soon. Just checked my PSU, 12v1 rail = 18A, 12v2 rail = 16A :( I was cheap too.

Should suffice if you really have that amperage, which is not given with cheap PSUs. Mine has pretty much the same (20A individual, 33 or 34A combined), but it possibly really has them.

Video card manufacturers should have this requirements listed in specification. Or many people who don't have the correct PSU would "OMG the card sux!"

They should list the real wattage, amperage etc the card needs. Their PSU estimates aren't that great. I remember my 2600XT said it needed a 550W PSU. Now suddenly 450 is enough for a 4850?

Well, guys, if you replace the PSU, given that pretty much every Intel mobo now has Crossfire, it might be a good idea to get a stronger PSU just so you can add a second 4850 when it becomes cheap.

[NewbieOneKenobi]

What do you mean by double start problem?

I just got this 500W PSU, and every time cold boot will have my PC turn on for 2 seconds, then turned off for 5 seconds, then turned on again for good.

Are we talking about the same thing?

Exactly the same thing. It doesn't happen when the computer is fully warmed up - not normally at least. However, it rarely happens when the computer is getting a fully fresh start. I would say it happens when I turn it on after turning it off after low load. However, please note that normally a 500W should be enough for my computer, even if we assume that the card eats 270W under full load. 270W for GPU, 80W for CPU... even if the 500W PSU really delivered only 420W, the rest of the computer shouldn't add up to 70W.

[Freshmir]

I decided to give up trying to figure it out. Got a 9800GTX on the way. Anyways my power supply has 41a at 12v. So I doubt its that. Might be a compatibility issue. http://www.newegg.com/Product/Product.aspx?Item=N82E16817139004&nm_mc=OTC-Froogle&cm_mmc=OTC-Froogle-_-Power+Supplies-_-Corsair+Memory++Inc.-_-17139004

[jason4207]

I've got a 560W (38W 12v rail) in my rig now, and it has happily powered a Quad at 3.915GHz, and an 8800GTS-512 volt-modded at 849/2268/1247 for bench runs. This is the only time I hear the fan in my PSU pick up speed.

Don't even bother reading a lot of manufacturer specs. Look to reputable review sites, and our own PSU sub-forum. You want powerful single rails, and high quality components.

I also have a PC P&C 750w sitting on my desk that'll probably get installed when I get my P45 and (2) 4850's (they will be volt-modded).

[Hardin]

Well good luck with your 9800 gtx then. I hope it works for you.

[jobrien2001]

I have the same board/mem/cpu you have and a 600w power supply. I get no stuttering on my 9800GTX, dont see why the 4850 would be any different. Do you have at least 30A on your 12v?

[WorshipMe]

From what I could understand. He was using the 7.4 drivers on the disk, somebody said he shouldn't and linked to the new hotfix. He installed it without first installing the 8.6 Catalyst drivers. The hotfix requires 8.6, does it not?

[Cheator]

From what I could understand. He was using the 7.4 drivers on the disk, somebody said he shouldn't and linked to the new hotfix. He installed it without first installing the 8.6 Catalyst drivers. The hotfix requires 8.6, does it not?
They aren't 7.4s, GPUz reports 7.4 for my 3850s which are running cat 8.6

[WorshipMe]

They aren't 7.4s, GPUz reports 7.4 for my 3850s which are running cat 8.6
He said he was using the drivers off the disk, and somebody said they were the 7.4s, I was just going by that.

[muddocktor]

OK, I have issued an infaction to one person already in this thread and will be issuing more if the flaming continues from anyone. If you can't keep from flaming in your post, you better not post anything! FINAL WARNING!!