Can't last longer than 19 hours in Prime95 Blended Test

mitchafi

Golden Member
Mar 25, 2004
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My system:

Athlon 64 3200+ @ 220 HTT (1.5v)
2 x 512 Mushkin PC3500 Lvl 1 @ 2.7v (2.5-3-3-10)
Radeon 9800 Pro @ stock
Audigy 2 ZS
Asus K8V Basic
Antec TruePower 430 PSU
1 WD1200JB Storage Drive
1 74 Gig Raptor
Nec 2500A
Samsung DVD/CD reader
Antec 1080 Plus Case

When I ran Prime95 with the VCORE at 1.55 Prime95 blended failed after 17 hours and then I moved it down to 1.5 and it lasted 19 so I don't think upping the VCORE will help. So is there anything else I can do to make my system rock solid? The only thing I know of off hand is to bump the DDR voltage to 2.8v and I don't know if that is wise. Isn't 2.8v a little much? Also I could relax my memory timings. Right now everything is on auto except for TRAS which I changed to 10 (was 6 while set on auto). So is there anything else I can try?

New Problem

After going 44 hours without failing in Prime95 at 220 HTT I was pretty confident with my machine's stability but to be sure I was completely stable I decided to run 3Dmark03 for a few hours consecutively. Unfortunately, I can't run it at 220 HTT even once without it crashing my system somewhere in the middle. The first time I came back after leaving 3DMark running and the program was nowhere to be seen, must have crashed to the desktop. The next time my screen went black and I was forced to power down. So, what are my options to make this OC stable? Any ideas where the problem lies? (I.E. VCORE, DDR Voltage, ram timings, etc). Also beforehand I was having problems getting 3DMark03 to run at all without crashing and telling me that various texture files were corrupt. Reinstalls didn't fix the problem but downloading a new client seems to work, at least for now. Thanks in advance for the input, hopefully I won't have to lower the OC.
 

Shimmishim

Elite Member
Feb 19, 2001
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2.8 volts for ram is nothing.

i usually run over 3.3 volts and my ram is perfectly fine.

either bump up the voltage or loosen the timings some more
 

DAPUNISHER

Super Moderator CPU Forum Mod and Elite Member
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Aug 22, 2001
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Originally posted by: EngenZerO
isnt 19 hours stable?
No. It should run 24/7/365 without errors.
 

Shimmishim

Elite Member
Feb 19, 2001
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Originally posted by: DAPUNISHER
Originally posted by: EngenZerO
isnt 19 hours stable?
No. It should run 24/7/365 without errors.

some guy last year posted how he had run prime95 on one of his computers and forgotten about it...

he ran it for 865 hours before it errored...

so you think that guys computer would be considered unstable?

hmm...

maybe we should all run prime for 866 hours before we call it stable......

that's one reason why i question prime at times... but i still use it nonetheless...
 

EngenZerO

Diamond Member
Dec 24, 2001
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Originally posted by: Shimmishim
Originally posted by: DAPUNISHER
Originally posted by: EngenZerO
isnt 19 hours stable?
No. It should run 24/7/365 without errors.

some guy last year posted how he had run prime95 on one of his computers and forgotten about it...

he ran it for 865 hours before it errored...

so you think that guys computer would be considered unstable?

hmm...

maybe we should all run prime for 866 hours before we call it stable......

that's one reason why i question prime at times... but i still use it nonetheless...

I usualy test my system stablility by

3 hours of mem86
3 hours of prime95
3 hours of 3dmark loop

dunno. 9 hours of consecutive stuff. thats good in my book, but I am tempted to prime for 24 hours and see what happens.
 

mitchafi

Golden Member
Mar 25, 2004
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Well I don't want to lower the overclock If I don't have to so I'll try relaxing the 2.5 to a 3. Think that would have any significant effect? And to the memtest question yes I passed 24 hours without errors on all tests.
 

DAPUNISHER

Super Moderator CPU Forum Mod and Elite Member
Super Moderator
Aug 22, 2001
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Originally posted by: Shimmishim
Originally posted by: DAPUNISHER
Originally posted by: EngenZerO
isnt 19 hours stable?
No. It should run 24/7/365 without errors.

some guy last year posted how he had run prime95 on one of his computers and forgotten about it...

he ran it for 865 hours before it errored...

so you think that guys computer would be considered unstable?

hmm...

maybe we should all run prime for 866 hours before we call it stable......

that's one reason why i question prime at times... but i still use it nonetheless...
I don't particularly care for P95TT because I run F@H and a Gromacs is > P95TT IMO. My point is that any DC project should be capable of running 24/7/365 without error ;) If a Gromacs errors out I know my overclock isn't 100% stable. However, My A64 has been folding flawlessly for weeks since converting it from a SETI box. My SFF was another story though, after adding a ti4600 VIVO the heat&power usage created instability that caused F@H Gromacs error out, Tinkers were fine. I had to reduce the overclock from 2.33ghz to 2.17ghz to stop loosing points from submitting only partially completed work.

regardless of wether he ran it for 2hrs or 200hrs, it should not error out if the system is 100% rock solid stable, just like F@H does. Of course I have the occassional reboot due to temporary power outages, or for maintainance, or upgrades, but beyond that my boxen have been folding or crunching 24/7/365, and with the exception of a unstable overclock that had to be lowered due to vid card upgrade without issue.
 

JBT

Lifer
Nov 28, 2001
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I'd just pump more voltage into the RAM I have put 2.8 in mine for over two a years and its fine. I have tried 2.9 even but it doesn't seem to be as stable like that.
 

einsig

Junior Member
Jul 3, 2004
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Originally posted by: mitchafi
My system:

Athlon 64 3200+ @ 220 HTT (1.5v)
Asus K8V Basic

Isn't 2.8v a little much? Also I could relax my memory timings. Right now everything is on auto except for TRAS which I changed to 10 (was 6 while set on auto). So is there anything else I can try?

2.8v is fine. However I have a feeling you are asking too much out of that mobo/chipset. That 220 HTT is pretty high for that mobo considering its lack of a PCI/AGP lock, well assuming you are using a mult of 10 or 11. In fact on my 2400+ and the K8V I can't reach 220x11 at all.
 

mitchafi

Golden Member
Mar 25, 2004
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After relaxing the memory timings to 3-4-3-10 I was able to last 44 hours in Prime on blended test. It never failed, I turned it off because I needed to use my machine and it really slows down things. So, I'm pretty confident that the system is stable after running for that long, and I don't care to leave it on for weeks on end. Those timings are really relaxed also so I'm going to try bumping up a few of the numbers and then trying prime again. I didn't have to bump up to 2.8v either for the memory. And then maybe after that If I'm still stable I'll try going up to 225 HTT :)
 

mitchafi

Golden Member
Mar 25, 2004
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New Problem

After going 44 hours without failing in Prime95 at 220 HTT I was pretty confident with my machine's stability but to be sure I was completely stable I decided to run 3Dmark03 for a few hours consecutively. Unfortunately, I can't run it at 220 HTT even once without it crashing my system somewhere in the middle. The first time I came back after leaving 3DMark running and the program was nowhere to be seen, must have crashed to the desktop. The next time my screen went black and I was forced to power down. So, what are my options to make this OC stable? Any ideas where the problem lies? (I.E. VCORE, DDR Voltage, ram timings, etc). Also beforehand I was having problems getting 3DMark03 to run at all without crashing and telling me that various texture files were corrupt. Reinstalls didn't fix the problem but downloading a new client seems to work, at least for now. Thanks in advance for the input, hopefully I won't have to lower the OC.
 

calam63

Member
Apr 27, 2004
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its probably your bus speed are not liking the increase in bus speed - since there is no pci/agp lock the increase in fsb is probably the culprit
 

mitchafi

Golden Member
Mar 25, 2004
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Possibly, but 220 is pretty mild, I have heard of many people hitting 220 on K8T800 boards without the PCI/AGP lock. Anyone have any other thoughts?
 

Athlonin

Member
Nov 23, 2001
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I can run prime95 6 hours (i just turned it off) on my abit kv8 at HTT 237, no agp/pci lock. I don't think that is your problem
 

mitchafi

Golden Member
Mar 25, 2004
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Well, I don't exactly understand what you mean, but I know Prime95 isn't my problem, I lasted 44 hours and was still going strong. Obviously Prime95 thinks my system is stable, but due to the fact that I can't run 3DMark even once without crashing, it is definitely not stable. So, anyone else know if there are any other measures I can take to become stable in 3DMark before I am forced to lower the HTT?
 

DAPUNISHER

Super Moderator CPU Forum Mod and Elite Member
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Aug 22, 2001
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Originally posted by: mitchafi
Well, I don't exactly understand what you mean, but I know Prime95 isn't my problem, I lasted 44 hours and was still going strong. Obviously Prime95 thinks my system is stable, but due to the fact that I can't run 3DMark even once without crashing, it is definitely not stable. So, anyone else know if there are any other measures I can take to become stable in 3DMark before I am forced to lower the HTT?
It certainly sounds like your 9800pro doesn't play well with the AGP out of spec. I've read others say their's held them back too. My board has AGP lock so I haven't had any trouble with 240LDT and a 9800pro.
 

mitchafi

Golden Member
Mar 25, 2004
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Oh rats. I guess I'll hold off for a while and eventually upgrade to a NF3-250 board or K8T800 Pro. The overclocking isn't really that big of a deal to me but I thought I might as well try and get a 3400+ out of my 3200+ at no additional charge. Was also looking to squeak out a few extra FPS in UT2K4 and other games. I'm going to try going down to 215. I like nice even numbers even if 219 is stable :)
 

dheffer

Senior member
May 26, 2004
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bump up your agp voltage and HTT voltage, just .05 extra, and then try
that did wonders for me with an abit kv8 and a radeon 9800 pro @ 230mhz bus