Prime95 on high speed P4's (c1 stepping)

[markodude]

Can anyone get the above prog to run without showing errors on their C1 stepping P4 - or any P4 above 2.5ghz???
I cant :( even at default voltage/clock.....just wondering if its only me cos it runs most stuff stable.....

[DaveB]

I ran Prime95 for 24 hours with my P4 2.5 C1 @ 2.8 GHz on my Epox 4G4A+. The core was set at 1.85V but dropped to 1.73V during the Prime95 run. Temps under 50C with a Thermaltake Volcano 7+. Any higher and it gets a rounding error after 20 minutes or so.

[markodude]

Cheers DaveB thats put my mind at rest.....kinda
Ive put the 2.5 C1 in the BG7 now and the 1.8A back in the P4T-533, the BG7 is booting at 3ghz with default voltage but no time to check if it was stable (was on my lunch break) Although I did do a quick sandra bench and got 5957Mips
Will test tonite and post reults.....

[hc1001]

maybe u have ur memory running to aggressive....

[yer_huckleberry]

My situation similar to Daves...

Sig no quite accurate. I am now running 1.675v to maintain stability. With my fsb @ 160, 1.675vcore and 2.7 ddr voltage I had ran Prime95 for 28 hours. I manually stopped it at this point. To say the least I was very happy and have not had a stability problem since.:clap:

EDIT:

My voltage also reports a voltage drop under load. Speed Fan reports 1.65 when my voltage is set to 1.675 under Prime95 load.

[Crash893]

http://www.teamprimerib.com/gimps/

here is a forum for the prime95 client(s)

the guy who programed prime95 is a mod there

[markodude]

CHeers guys, some interesting stuff.
Ive put the C1 in my BG7 and its stable at 3088mhz, Im about to post a new thread with benchies etc
Seems the/my P4T-533 just isnt happy with speeds over 2.5ghz, theres no point in me running the C1 in there as I cant get the same FSB as on my 1.8A@2.34ghz.....sig change time...

[NookieN]

I didn't have any problems running a Prime on a 2.8 at 3.1 in an Asus P4S533. It's actually been pretty temperature stable (runs fine up to 54-55C).