only higher voltage?

[pangolin]

hi,
I have a P2B asus rev1.10 and a Pentium3 800 MHZ and I read an article on your site about this configuration.
With my last p3 500 MHZ I tried to overclock by setting the FSB to 133 and I had my bios-chip out of work, so that was not such a good idea, but thanks enough, the shop had tools to reflash it again.
So now I read this article and do I understand it correctly I can overclock my p3 800 by just setting the voltage higher on the MS-6905 converter I have?
This, because multiplier 8 is highest on this MB.
The voltage now is 1,65.
Should I just set it to 1,75 and the processor would work on higher MHZ?
Oh, the article is at http://www.overclockers.com/tips296/index02.asp
My processor's temperature never reaches 50 C en should be safe to 80C so I think I have room enough here to overclock.

thanks

Paul

[Allan Nielsen]

*Edited: Sorry, I forgot to welcome you to our forum! So here it is:

WELCOME :)


A simple answer: NO - increasing voltage won't make it run any faster!

You have to increase your FSB to make it run faster, and increasing volts will only help you overclock higher, to obtain higher FSB. The multiplier is locked on the CPU (to 8), which is why you can't change it.

FSB x Multiplier = CPU speed
Yours is now 100 x 8 = 800

Is your CPU really at about 50c? That is WAY too hot in my opinion. Mine is at 22c idle, running @1001 MHz!

You really need some better cooling on there! Look for an Alpha PEP66T or something like that (The PEP is perfect for slotket use)

You should also apply a paper thin layer of thermal grease between the cpu core and the heat sink. If you are using the stock heat sink there might just be a thermal pad on there. Its no good.

Cooling makes a succesful overclock!

Good luck - hope you can use any of this. If not, feel free to ask again! :)

[The Doors]

It's only needed to satisfy the bigger request of energy of the Cpu OCed rising the Fsb :-)

[outhouse]

Allen is rite you never want to run your CPU any where near 50C Below 40C is average and you need to remember that when you overclock a CPU they get a little picky when it comes to temps, the higher you overclock them the cooler they need to be or they will crash.

[pangolin]

hi Allen & the others,

I already realized it was not the brightest question in my carreer, but alas, thanks for answering and not caling me "Einstein" :)
I understand I have to make the FSB higher.
The temperature of the processor is usually below 40 and now, idle, it is 35C with the case open.
I have installed this processor myself and do know nothing about any pad. I guess I just should apply some of that grease.
The thing that worries me most is the fact my bios got flushed, the last time I raised the FSB to 133.
Have you any idea how that could have happened?
Anyway, I should have raised it by little steps and not with 33 at once.
Also I think I should higher my access-time of RAM before trying, because I have it set (in the bios) as low as possible at the moment. Really makes a difference btw.
Maybe that had something to do with the bios-flush?

Paul

[Allan Nielsen]

Hey Paul

Don't worry, we don't allow flaming of any kind in here! :)

I STRONGLY suggest that you get some thermal grease between the heatsink and the CPU. Is there nothing in between now? If not thats why it is so hot.

Have you considered lapping your heatsink?

Lapping means that you use some very fine sandpaper to get rid of all the small hotspots on the bottom of the heatsink. Use a piece of glass or something that is completely flat, and use the sandpaper to lap the heatstink bottom. When its totally flat, its good to go. Just remember to add that paper thin layer of thermal grease - Arctic Silver 2 is very good, but also expensive. You could use some standard silicone goop, its better than nothing.

I don't think your BIOS will suffer from overclocking this thing. You might not reach 133MHz FSB, but try upping it in small intervals.

Good luck!

[pangolin]

Hi,

If I remember right, the heatsink was attached to the processor when I bought it.
I just attached the fan and the converter, changed the multiplier on the motherboard and wonder oh wonder, everything worked fine :)
So I will follow your advice of making sure there will be better contact between the heatsink and the processor.
I will do all this tomorrow, because I want to be able to run to the shop the get my eprom reflashed :)
I think it's most people's nightmare to have your eprom gone bad.
I know it's mine.
Too bad I have no idea how it could have happened.
As long as that doesn't happen, I will be happy trying.

Paul

[Allan Nielsen]

I can't make any promises bro, but I wish you the best of luck with your overclocking! :)

[pangolin]

In that case, nothing could go wrong :)

[pangolin]

Hi,
to keep you informed (and stand by :)) I have overclocked now just a little to 840 Mhz.
When I play Quake3 (the game I am doing it all for) the cpu is still working 100% all the time (I think it would be better to have that below 100% because this means the cpu is the bottleneck during the game) and its temperature goes up to 44 C.
Pretty high, but I have not apllied any grease or anything else yet. I haven't changed the voltage yet either.
I did buy some paste I can apply, because the silver stuff is not readily available.
Anyway, I am having great fun!

Paul

[pangolin]

Hi again,
same situation (840 MHz), but the processor has voltage 1,8 (it was 1,65) now and I have apllied the paste.
You were right about some pad and I have removed it.
Now, when I play quake the temperature becomes 42 C
A little less, but my question: does the higher voltage also induce higher temperature?
Because if it is, the lower temperature is not so less at all, be really nice imo.
Btw, it is very hot in holland now and that is also a cause for higher temperatue, say 5 degrees higher as usual.

Well, now it is time to try higher FSB rates.
I can't wait :)

Paul

[Allan Nielsen]

Hey man

Good to hear some feedback. You did the right thing applying the grease, seeing it took 2c off. Using Arctic Silver instead will prolly take off another 2-4c.

Yes, higher voltages also increases temps! Both should be as low as possible! :)

Hot in Holland? Damn, the weather hasn't been too good here in Denmark the last few days. :(

C ya!

[pangolin]

Well, the cpu is now at 960 MHz and after quake it's 44 C (idle 34 C)
I leave it like this for a while, say a few weeks and then I'll see if I want to try even higher.
I heard 960 seems to be the limit for this processor anyway, so I am happy with this and the frames/sec in quake are much higher too so it was really a fruitful experience (and I hope it stays that way :))

Thanks for the help, man :)

Paul

[Allan Nielsen]

According to the CPU database, the average overclocking speed of a P3-800 MHz is 990! Some have gotten theirs up to 1120 with air cooling. Who ever told you that it maxed out at 960??

What voltage are you running it at now?

You really should get a better cooler, but if you are happy I am happy. Just a word of advice. :)

[Zoli]

hello,
i'm glad some people have been having good luck with their P2B's and PIII 800!

I’ve been trying to upgrade a friends CPU from a Pentium II 350 (SECC2) to a PIII 800 (SECC2). When that failed I tried a PIII 800 socket 370 chip with an Asus S370-DL adapter. That doesn’t work either.
It runs fine with the PII-350 and also with a PIII-450. These are all 100FSB CPU’s.
I’ve had several problems with this upgrade including the BIOS and that the mother board doesn’t supply enough voltage for the CPU fan. I’m now using a 3 wire to 4 wire adapter to plug it into a plug from the power supply and the fan now spins happily along.
I’ve been adjusting jumpers on the mother board (3.5X, 4.5X and 8.0x) there are no jumpers for voltage. Been switching jumpers on the S370 adapter for 1.70 volts and also for “CPU default”
I end up with an unresponsive computer that won’t even wake up the monitor.
I have gotten a POST beep error which (depending on where I look for the meaning) may or may not mean I have a video card problem or that my CPU is not seated properly or that it is damaged. It is a series of repeating alternating tones.
I now have the socket 370 and Asus adapter in my computer (Asus P3B-F and had a PIII-800 SECC2 in it) and the chip is fine and all the specs, vcore, CPU ID etc all check out.

Here are the specifics:

Asus P2B-F rev. 1.00 motherboard.
HIP6019 (CB) voltage regulator
Winbond W83977TF-AW
BIOS’s tried: these are P2B-F specific - 1012, 1013a and 1014fn (from the German Asus FTP site) the 1014fn does not have hardware monitoring and I just KNEW this was the piece of the puzzle that would fix my boot up problems.
I’ve also tried the P2B 1012nh BIOS again w/o hardware monitoring.
Asus S370-DL adapter, rev.1.02

256MB PC100 RAM
Asus V7700 GeForce2
Etc.

This is my 4th PII/PIII-something to PIII-800 upgrade and all the others went without a hitch.
I’m at a loss on this one though.

Thanks,
The former Dr. Z now known as The Butcher Z.
Zoli
drz@nightowl.net

[The Doors]

For Zoli and all the people interested:
Probably you have the same prob that I got with an Asus P2B and P2B-F with a P/// 650 (6.5x100Mhz): those boards cannot give the right voltage to the P/// chip depending by the older revision :-( no way!
After a lot of test and settings I decided to replace the Mobo with a used Epox 440Bx dual slot1 with Scsi on board and now all works fine.

I hope it helps you :-)

[Zoli]

yup, that’s what i found out too, the P2B-F with the old voltage regulator will only go to 1.8v. I needed 1.65v for the PIII-800 SECC2. That is why I tried the socket 370 version with the flipchip adapter which goes down way below the requirements (1.70v) for that chip.
So I think I have the voltage issues (CPU and fan) resolved, now I think it maybe a BIOS problem.

Thanks!
Zoli

[Zoli]

Just wanted to let people know that i did get this hardware combo to work.

So in a nutshell:
With an Asus P2B-F rev 1.00 mother board-
This is what worked:
PIII-800 FCPGA 100FSB (pIII-800/E) with a socket 370 Asus adapter S370-DL rev 1.02.
Set the voltage to 1.80 on the S370. Also make sure that the jumpers are set for Cu and not Celeron.
I set the jumpers on the mobo to 8.0x but this shouldn’t matter.
I also needed a 3 pin to 4 pin adapter wire to power the CPU fan since it exceeds the power output capabilities of the mobo.
Asus BIOS 1013A. 1012 should work but I didn’t try it, 1014 did not work.


PIII-800 100FSB SECC2 CPU did NOT work regardless of how I held my tongue (the proper positioning of the tongue is vital but is different from computer to computer and depends on what you are trying to accomplish too, trial and error on this!).

Next step – overclocking it!

Good luck!
Zoli

[The Doors]

In few words, do you wanna say that with a slotket and a PentiumE Fc-Pga all is right on the older Asus P2B?

[pangolin]

After applying the silver thermal compound and a good heatsink/fan the temperature has gone down by at least 10 degrees Celsius when playing Q3 (i.e. 100% cpu usage).

Something must have been really wrong! :)

Thanks anyway everybody and especially Allen

Paul

[Allan Nielsen]

I am glad you cut off some high temperatures on that CPU man. What heatsink did you get?

I hope you come back sometime. Feel free to stick around and share what you have learned, it is certain that there are others out there with similar setups and similar problems.

[pangolin]

To share my experiences (until now) I have this configuration:
An Asus P2B motherboard and a Pentium3 800MHz CPU on a FC-PGA socket370 converter
I bought a globalwin WBK38 heatsink/fan and applied the arctic silver compound.
(remark: I had to remove the fingerguard from the fan and even in that case, one of the three memory-slots can not be used, because the heatsink/fan is covering it, but with 2*256MB dimms in the other slots, that is not really a problem)

(Tip: the heatsink/fan comes with the advice (and the cable) to plug the power into the case-power-supply and not on the motherboard. This way you cannot read the RPM of the fan, so I bought an extra plug (very cheap but difficult to find a shop that sells it), clicked the blue cable (that reads the RPM) out of the original plug and put that in the newly bought plug. Plugged that on the motherboard und voila...you can read the RPM as usual. Now you can call me Einstein :))

Anyway, my system is very stable now on 992 MHz.
On 1066 MHz it crashes playing quake3.
The temperature of the CPU is now 31 C (as usual, that is 5 degrees above room-temperature. On a 'normal' day I expect it to drop to 25C) and playing quake3 the temperature rises no more than 2 or 3 degrees, so that is i.m.o. really good!
The temperature of my CPU is much lower then it ever was before this overclock-adventure.

Another tip: before applying the arctic silver, read and print the online-manual before you have removed your CPU so you do not have to rush to the public library 5 minutes before closing-time, like some of us...AHUM! :)

Paul

[Allan Nielsen]

Hehe, cool man! :cool:

Now you are ready to start helping others in here! Read a few posts, reply to them if you have the answer or just a tip, and soon you will be as addicted to this forum as the rest of us! lol

[Zoli]

Doors,

Been running for about 2-3 weeks now and all is fine with the PIII 800 and Asus P2BF rev 1.0 as outlined above.
I don’t have any monitors for temperature but after 4 hours of running Sachs Marine ScreenSaver - www.fish-byte.com – the heat sink was only warm to the touch.

thanks,
Zoli

[pangolin]

A little cable that measures the temperature cost me just about 10 guilders (3 dollars).
You plug it in on the motherboard and attach it to the cooler.
Takes just a minute.
This, together with the (freeware) Mprobe software, that monitors the temperature of your motherboard and cpu and displays that in the system tray, is imo just too cool to let go bye :)

Paul

[The Doors]

Thank you Zoli for your Info ;)
About the suggestion of pangolin for the thermal sensor, well the best way is to put the sensor between the Cpu Core and the Heat Sink to check the true temp of the chip, if not supported by the Mobo in Input, no probs there's the Senfu thermometer with a Lcd display :D

[Zoli]

Thanks for the temperature/thermometer tips. I just may do that
if/when I start overclocking this puppy.

For now I'm quite pleased with the performance increase going from a P2-350 to a P3-800. I also upgraded my Asus TNT video card to a GeForce2 so it’s like I have a whole new computer!

Thanks again for everyone’s time, tips and info,
Zoli

[The Doors]

Is my second upgrade step :)
First of all I wanna replace my system and after the 'older' Asus V3800 TNT2, but I prefer to wait for the newer GForce3 Mx.

[funnyperson1]

how bout a radeon 7500?