View Full Version : How faith should I put into Prime95?
TheWeaseL
08-03-2003, 09:21 AM
I know that sounds like a weird question, but I've been working this stick of 512 pc3700 buffalo ram for a couple days now, and memtest86 will run for a long time w/o any errors, and then prime95 will die on me anywhere from within the first couple tests, to 5-7 hours into it. I know it isn't my cpu, because it is good up to 2.3ghz @ 1.85v and that is what I keep the vcore at.
Any ideas?
Tweaked!
08-03-2003, 09:45 AM
Welcome to Xtreme:)
If prime is failing, then there's definitely something within your system that's not stable. If you're in question to primes stability, then try running folding along with memtest or prime, or all of them at once. Stability tests aren't about what they accomplish in those programs, it's more about getting your system to a complete full load and having it handle it. 1.85v shouldn't be a problem either, just keep an eye on your temps the whole time and make sure they don't get out of hand. Anything around 55c or lower should be acceptable. :cool:
TheWeaseL
08-03-2003, 10:35 AM
Temps stay at about 45C or lower under a full load. Last night I ran prime95 and sandra burnin wizard running the memtest, and prime failed after about 7 hours and some odd minutes. I just let memtest run, and it did about 1600% coverage, no errors...
if prime makes it to 7 hours then its almost stable. reduce the fsb by 2mhz (or even 1), test it again, see if itll run for 24 hours without failing, if it does then its stable and u know the memory wont do the faster speed on those timings.
if it still fails the same then it would seem to be the cpu giving the errors not the memory, reduce the cpu speed, test it again.
sjohnson
08-03-2003, 11:21 AM
What they said ;)
TheWeaseL
08-03-2003, 11:49 AM
Grrr, this stick of buffalo 3700 is becoming a real disappointment...Cranked the vdimm all the way up to 2.9v in the bios, 3.0v actual on my nf7-s here...Struggling to do 230fsb...
u sure its the mem and not the board? nf2 boards are notoriously bad at getting good fsb's regardless of memory, even more so without vdd mod.
TheWeaseL
08-03-2003, 12:22 PM
I did the pencil vdd mod, and right now, I have it set to 1.5v in the bios, which should be giving me 1.9v in reality...
Edit: I bumped the ram up to max volts, set it down to 225, prime so far is running alright. Timings are 2.5-3-3-7....I know this stick is rated 3-4-4-8 @ 233, but still, I'm feeding it A LOT of juice.
drwowe
09-06-2006, 02:00 PM
A prime95 failure means there's some particular electrical pathway in the CPU that is unstable. It only takes one to produce a wrong result.
If the system seems stable in every other way, then the problem is probably in the FPU because FPU bugs don't usually cause crashes and hangs. Just wrong answers.
:D
K.I.T.T.
09-06-2006, 02:21 PM
A prime95 failure means there's some particular electrical pathway in the CPU that is unstable. It only takes one to produce a wrong result.
If the system seems stable in every other way, then the problem is probably in the FPU because FPU bugs don't usually cause crashes and hangs. Just wrong answers.
:D
Holy thread resurection batman!! :banana: :banana: :banana: :banana: :banana:
:clap:
:slapass:
drwowe
09-06-2006, 06:36 PM
I realized it said 8/3 not 9/3 after I posted. :) Arrived at the thread through search...
Hondo=TFD=
10-04-2006, 01:04 PM
I realized it said 8/3 not 9/3 after I posted. :) Arrived at the thread through search...
LMAO, it's not the 8/3 or the 9/3, it's the 2003. :toast:
[XC] Lead Head
10-04-2006, 01:33 PM
LMAO, it's not the 8/3 or the 9/3, it's the 2003. :toast:
Conradulationa! You are the second person to bump this thread!:slap:
Hondo=TFD=
10-04-2006, 01:40 PM
Conradulationa! You are the second person to bump this thread!:slap:
Uhh, it's congraTulationS. And, no, i was the third to bump this thread. :woot: :slap:
Zardokk
10-04-2006, 04:39 PM
http://www.kingsasquatch.com/Beat_Dead_Horse.jpg
KoHaN69
10-21-2006, 01:46 PM
play half-life 2, one of the best stressors of mem stability
raccoonone
10-25-2006, 03:47 PM
LMAO, it's not the 8/3 or the 9/3, it's the 2003. :toast:
lol, ya this thread is just a *little* old
I know it isn't my cpu, because it is good up to 2.3ghz @ 1.85v and that is what I keep the vcore at.
If it fails, it is not good. End of story.
osiris999
11-03-2006, 06:18 PM
im sure he fixed his problem by now