Trouble OCing my XP 3200+ (Barton)

[firebirdude]

I can't do it. Plain and simple. I have one of the best heatsinks for the socket A platform (Thermalright SLK900A) with a 92mm fan and AS5, and I still can't do it. Moved from 200MHz to 204MHz and as soon as the desktop appears, I get the blue screen "dumping physical memory to disk". Moving from 200MHz to 202MHz will get me about half way through 3DMark03 before I get I get the same error. WTF?!!!!!

AMD XP 3200+ (Barton Core)
Asus A7N8X Ver2.0
2 X 512MB Mushkin RAM
Sapphire ATI 9800PRO

 

[Wolfy]

Am I incorrect in my impression that the XP3200 is more or less as high as the tech will go?

But what are your multiplier and FSB settings?

"Its only when you look at ants closely with a magnifying glass on a sunny day that you realise how often they burst into flames"

 

[scottchen]

You'll need to raise voltage, the default it 1.65 raise it to 1.75, and you should be able to hit 2.4ish

 

[firebirdude]

Ok, raised voltage from 1.650 to 1.675 and it allowed me to set FSB to 204MHz and still stay stable through a full 3DMark03 and PCMark04 test. (3DMark scores stayed roughly the same, PCMark scores improved by an average of about 80 points.) Even bumping up to 205MHz would give me the blue screen. So I up'ed the voltage to 1.7V and.... nothing. STILL cannot get stability at 205MHz. WTF?

And on a side note, my multiplier is adjustable in my BIOS. Is this the case with everyone? Yes I know it's locked, but I thought it wasn't even available to adjust? Bumping to x11.5 at stock FSB speed will cause the PC to keep re-starting over and over again.

AMD XP 3200+ (Barton Core)
Asus A7N8X Ver2.0
2 X 512MB Mushkin (2.5-3-3)
Sapphire ATI 9800PRO

 

[Ned_Flanders]

Yes the bios still allows you to change the value on most mobos.

It seems like your RAM or PSU may be holding you back.

Please post your Voltage rails you are getting in the BIOS.

Also, try running a RAM/FSB divider and raise the Ram voltage to 2.7 / 2.8



______________
Welcome to my Shed of Pleasure

 

[firebirdude]

I am using a Fortron 500 or 550W PSU. Pretty hefty I thought. At stock everything, my voltages through BIOS are:
VCore=1.69V
+3.3=3.28V
+5=4.91
+12=12.16V

Ok, mixed results so far. Best result was 1.775V and 208FSB. Got me a gain of about 110 points in PCMark04. If I step up to 209FSB I get a "PCMark has occurred a serious error" during the falling block test. (3D rendering I think) Tried several times. Either that error, blue screen error or sometimes the PC completely locks up. After immediate reset, BIOS shows CPU temp at 42C.

However, sometimes a seemingly faster setting will give me lower scores. Example, with 1.725V and 206FSB I pulled a 4021 from PCMark somehow (seems a little high).... then 1.75V and 207FSB I only got a 3954. Anyway, 1.775V and 208FSB is constantly giving me a score around 4030. I was getting 3916 stock. This still seems pretty damn low. Not anywhere near 2.4G. Increasing voltage a step or two is only allowing me to get like an extra 1Mhz out of it. That's bulls#it. Tried increasing RAM voltage to 2.7 and 2.8. (2.9V is not available in my BIOS) Didn't help what so ever. RAM/FSB divider? Don't see anything like that in my BIOS. I see spread spectrum, is that it??

AMD XP 3200+ (Barton Core)
Asus A7N8X Ver2.0
2 X 512MB Mushkin (2.5-3-3)
Sapphire ATI 9800PRO

 

[firebirdude]

Running at 1.775V and 208FSB. Been passing PCMark fine, but I tried CPU Burn-in and it's a no go. Not sure how long it ran though. I set it for 3 hours, went to the store, came back an hour later and the PC had restarted. So under an hour. I think I'm just going to return to stock speeds. If I can't get any noticeable difference anyway... and it wants to restart under this mild OCing.... mise well just stay at stock for longevity.

AMD XP 3200+ (Barton Core)
Asus A7N8X Ver2.0
2 X 512MB Mushkin (2.5-3-3)
Sapphire ATI 9800PRO

 

[gomerpile]

You have a xp 3200 with a little beefed up cooling I have same as you except I have a water cooled system and a home built water chiller. I was in the same area as you with the over clocking and the system crashed or couldn’t finish the bench test.

Heat was the problem when raising the core voltages I found that the coils got way too hot and since finding this problem I customized the cooling by using a fan directly over the top of the coils, 2nd was getting the highest quality ram I could get, I was able to use the cold air in the cold air box as a cold air blower for the coils.

I ran tests all the way up to 265 fsb on an xp3200 and fried the coils I bought a new set of higher quality coils so far no problem. I do not run at this fsb but I am stable at 245 fsb and running at that. My video card is over clocked by 100 MHz higher and vram is 300 MHz higher all this was not possible without the use of a water-chilled system just a water-cooled system is not enough for extreme over clocking the water has to be chilled


<P ID="edit"><FONT SIZE=-1><EM>Edited by gomerpile on 06/06/05 10:18 AM.</EM></FONT></P>