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Detailed information on 2 9500 mod failures

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TruckChase!

Member
Joined
Dec 7, 2001
Location
Minnesota, US
I'm starting this thread in the hopes that I can put some concrete eveidence on the table regarding the failed 9500 mods, and to begin work to overcome the issues. If you add to this thread, please provide everyone with all the information relevant to your attempt.

First, my system specs
Epox 8k3a+ w/ 2812 bios, Athlon 2200+ @ 177x11.5 (2035Mhz), 256MB DDR CL2 all settings tweaked, Western Digital 120GB HD on VIA IDE controller, Toshiba DVD-Rom drive, Aopen CDRW, Sound Blaster Audigy Platnium, Intel Pro 10/100 Nic, 500w Power Supply, plenty of cooling

WinXP Corp SP1, VIA 4-in-1 4.45, Catalyst 3.0a, Rivatuner 12.1

Second, the cards:

I ordered two Saphire 9500 Non-Pro 128MB cards, one from newegg and one from Nicx. They both have 3.3ns infineon ram, and they're both on the exact same PCB. (Red 9700 PCB) The one from NicX *appears* to be a bit newer based off of the weathering (minor mind you... not actually "weathered") of the manufacturers' stickers on the board.

I was pretty excited to say the least, and I couldn't wait to try them out. After running an insane ammount of benchmarks on my system with my geforce 4 4600 to create a baseline, I popped the card from newegg in. I had tons of issues and eventually had to reformat my machine, but once I got it back up with XP I headed straight for 3dmark.

Before I list all the results, let me say that there is NO overclocking going on at all with these cards. I'm taking everying one step at a time.

Here's the first result with the first (from newegg) UNMODDED card.. this would just be the 9500 128MB running with the 256bit memory interface.(which is stock on these cards)

http://service.futuremark.com/compare?2k1=5638228

11264. Not bad... my high score with the GF4 (without the lod CHEAT) was 13635. After that I proceeded with the software mod. Using the catalyst 3.0a drivers, I ran the patch script and re-installed the drivers. Upon rebooting, I ran 3dmark again.

Checkerboards. Damnit. Checkerboards right across the middle of the screen, and only there. They seemed to be spaced by about 32 pixes, and the boards themselves were 16x16 pixels wide. (cubes) They were present in EVERY test, but the card was totally stable other than that. Here's the 3dmark result:

http://service.futuremark.com/compare?2k1=5638418

Awsome score, 14035 before I've even tweaked my system or overclocked the card. Obviously tho, I can't use this with checkerboards on the screen at all times. Now, here's something that I want to point out. Look at the multitexture fill rate of the card.. unmodded vs. modded. This is how to tell if the mod worked successfully or not for sure. I'll explain this in further detail below, but for now, look at the fact that unmodded the fill rate was 1104 vs. 2173 for the modded. Almost double, as it should be with double the ammount of pipes and memory bandwidth to spare.

I tried both turing off "Write Combining" and Fast Writes and a combination of either/or to no avail. The checkerboard pattern wasn't affected at all by either. I also tried messing with the AGP arperature. That also had NO effect.

Frustrated, I popped in card #2. This is where it gets odd. I had the hacked drivers already installed, so I just kept them that way. Upon running the benchmark I was excited, because I got no artifacts at all. It completed the benchmark successfully, but when it finished the score turned out to be right between the old modded card and the old un-modded card. Perplexed, I put on stock drivers and ran the benchmark again. Here are the results of each.

UN-Moded: http://service.futuremark.com/compare?2k1=5641781

11497

Modded: http://service.futuremark.com/compare?2k1=5638593

12765

compare that again to the first card modded:

http://service.futuremark.com/compare?2k1=5638418

Weird eh? I tried several different ways to mod including Wizzards' mod, and they all turned out with the exact same results. So, unmodded, the two cards performed the same, and without error. With the mod, the first card ran at full speed but displayed the checkerboard patterns, and the second card ran without artifacts, but at a crippled speed.

Here's where I want to touch on the multitexturing fill rate again. Notice on this second card, after the mod, the single texturing fill rate went up about the same as the "successful"(w/checkerboard) card, but the multitexturing fill rate didn't go up AT ALL. On the other card, the multitexturing fill rate DOUBLED. I'd like to focus on this figure a bit, so if anyone posts follup results on either a success or failure, please post your single and multitexture fill rates. Thanks :)

Let me re-iterate that to the naked eye, (and as identified by several hardware utilities) these cards are EXACTLY the same.

This is weird. I've been unable to come up with a concrete theory( :D ) as to why these cards would illustrate this behavior. I thought perhaps I had screwed up a driver setting or something (even tho i didn't touch the control pannel) and deleted all the driver settings from the registry and re-installed. Same result for both cards. I chaged the order of testing. Same result. I tried different driver revisions. Same result. I re-formatted and re-installed the OS. Same result. I tired DX8 vs. DX9, screwing with all the AGP settings, different motherboard bios revisions, and doing a rain dance. All same result.

Now for the questions:

Let's theorize as to what could be causing some of these chips to fail in either way.

Let's theorize as to what could be done to complete the mod successfully on these cards.

I'm hoping if we get a discussion going based of off concrete info that we can find some way to address the problem. If you have had a similar experience, please share with all relative information. If we can figure out a trend on successes vs. failures, perhaps we can figure out a way around these issues.

I'll be trying a volt mod on the cards tonight, and I'll post what happens here as soon as I'm done testing.
 
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9500 with 256-bit memory interface? is this correct? i thought the 9700 pro and non-pro only had the 256-bit memory interface. isnt that the only difference between the 9500s and the 9700s? im really confused now :confused:

i thought the only difference between the 9500 and the 9500 pro was the pro having 8 pipes. isnt the memory interface the same at 128-bits or does this hack open the other 4 pipes and another 128-bits for the memory?

i would love some clarification cause im bout to buy one of these. you did say saphire right?

i cant find a non-pro with 256-bit mem bus anywhere, can i have link?
 
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Ok.. for claification purposes.

ANY model on a 9700 board has a 256bit memory interface. It depends on the PCB, not the model.

In execution, it looks like this:

"Old" 9500 non-pro 128MB=256bit (because they're mounted on the 9700 board)
9500 non-pro 64MB=128bit
"New" 9500 non-pro 128MB=128bit (they're mounted on the 9500 pro or similar board)
9500 pro=128bit (always had their own board)
9700=256bit
9700pro=256bit

In summary, you're looking at the PCB. The PCB is what is determining the bandwidth.

If anyone can provide thier experince with this mod like I posted above I'd really appreciate it. Thanks! :cool:
 
i know this isnt what this thread is about but you seem knowledgable so im gonna ask. sorry. so this mod you are talking about is a hack for the driver that just opens up the other 4 pipes that the 9500 non pro lacks right? the 9500 pro already has the 8 pipes open right?

so whats the diff between the 9700 and the 9700 pro? the 9700 non-pro only have 4 pipes?

again im sorry bout this, hope you dont mind.......
 
Yup, you got it right... here's the breakdown (per amd's spec)

9500 = 128 bit, 4 pipes.... This is where the discrepency is.. they advertise 128 bit, but any one mounted on the 9700 PCB actually has a 256 bit interface.. any board on the newer PCB (should start shipping to resellers now or very soon) will have a 128bit interface.
9500 pro = 128bit, 8 pipes.... These have always had their own PCB, that's why you won't find any 256 bit boards here
9700 = 256bit, 8 pipes... The same thing as the 9700 pro, but the core and memory speeds are slower
9700 pro = What I could have just bought with the money I spend on these two damned 9500 cards. :D

I really hope to get this checkerboarding/not full performance stuff sorted out. Let's hope that someone has some ideas.
 
why not just overclock a 9700 non-pro? is it the same mem and gpu? the 9500s on the 9700 pcb are the red ones yeah? or are the new 9500 with only 128-bit bus red too?
 
I believe the majority of the PCBs are red..... I know the 9500 pro board is, and that's a 128 bit interface. The 9500s are cheaper than 9700s, thats why not just OC a 9700.

I kinda wanna keep this thread on-topic, so if you have any other Q's private message me and I'll be happy to help you out. :) Thanks man.
 
augustwest

If you want a 9500 to go to 9700 speed , aka 256 bit, the card must have the ram chips in a 2 and 2 configuration. If all the ram chips are 4 in a row then you have a 128 bit card.
 
I have the sapphire r9500np 128mb with unsuccessful rivatuner mod(checkerboards everywhere, even around the icons in windows xp). 3.3 infineon ram. The fillrates did just about double, like you said (I can't remember specific numbers but it jumpedfrom 11xx to 22xx). I have a question, mind you I am no computer expert. I know these cards on the 9700pcb are supposed to have 256 bit interface with 4 pipes disabled through device id. Many have theorized that the pipes are bad on these boards. What if there is something wrong/disabled with the interface, not the pipes(or are the pipes the interface?)? See sig for system specs
 
FYI,

Volt mod did no good on either card. Both over and underclocking were unsuccessful in affecting the artifacts or the other failed mod in any way.
 
TruckChase! said:
srwven:

Could you please download and run the expendable demo and see if you get artifacts in that? I'm working on another theory...

here's the demo

www.actiontrip.com/files/demos/expendable.phtml

Thanks
Holy Crap! That's 49megs. I am on dialsuck so I will try to download it tonight when I go to bed. I can almost guarantee it will give the artifacts. This card artifacted on every single test in 3dmark.
 
srwven said:

Holy Crap! That's 49megs. I am on dialsuck so I will try to download it tonight when I go to bed. I can almost guarantee it will give the artifacts. This card artifacted on every single test in 3dmark.


Whoa sorry man, didn't know you were on dailup. The reason I ask is because I get the artifacts in absolutely EVERYTHING I've tried thust far (all 3dmark tests and about 15 different games) except Expendable. For some reason Expendable runs fine. I wanna figure out if this is just me, and if not I wanna figure out what Expendable is or isn't doing that the others are.

Thanks man
 
Okay I downloaded expendable last night(my modem is still recovering:D ) I played it real quick this morning. In the setup I enabled hardware compression. I did get some real minor checkerboarding, mainly in the bright areas of explosions and lightning. It was nothing near that in 3dmark, though. When I get home I will redo the setup and try it without hardware compression. When I redid the mod last night it was interesting. I tried doing the mod (rivatuner) with the "new" cat 3.0a from ati. I did everything the same way I had with the other drivers but it wouldn't work. I uninstalled those then did the mod on the 6218 and installed those, and it worked. I checked 3dmark and used 32bit instead of compression. It decreased the checkerboarding slightly. I didn't get real noticeable checkerboarding in the fill rate tests with 32bit but did with compression. No artifacts in point sprite.
 
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