Prime 95 24hrs stable, but locks up in a game?

[glorylin]

Hey all, recently I upgraded a couple things in my pc. I've got my q9550 at 4ghz which have passed 12 hour, 24 hour, and 15hour blended tests in a row.

Just recently I opened up my gtx 275 which I got from a friend to put my own thermal paste on it and ever since then I've been seeing hard lockups on my pc when I play bad company 2.

After the lock up I ran prime overnight and passed a 15 hour test without issue. I go play the game again and it locks up again.

I've pushed down some of my overclocks on the 275, but i'm running at speeds where it was fine before I opened it up.
Anyone have any suggestions here? I'm at a loss to what the issue may be. I get good temperatures with furmark.

The only conclusion I came up with is that I damaged something while opening it, which I don't think is the case.

 

[SnOop005]

your videocard might be overheating, check to make sure the heatsink is seated properly. Prime95 is to test cpu/ram.

 

[glorylin]

your videocard might be overheating, check to make sure the heatsink is seated properly. Prime95 is to test cpu/ram.

The heatsink is fine. Furmark/gpuz only show 85c on full load. What I want to know is whether or not the lock up is associated with the gpu or if it could be any other components.

Considering 24hours stable on prime, I assume everything with my system should be totally stable. Of course this doesn't test my GPU.

 

[TJCS]

Did you try playing the game at stock speed?
Is your RAM overclocked? Run RAM at rated speeds?

 

[MJinZ]

Prime stable does not mean game stable.

 

[glorylin]

Yeah, I agree with you mjinz. I turned up the heat and ran prime 95 with furmark and it locked up similarly to how it does in game.

I'm guessing my northbridge wasn't perfectly stable. It was already at 1.59v which is very high, so what I did was just clock my cpu down lower and bring the nb back to safer levels. Now i'm going to run furmark alongside with prime overnight to see how stable it is.

my fsb was at 471, now lowered to 450.

Would you say theoretically that prime + furmark stable would mean game stable? 100% cpu/gpu load. Also can any of you give me a idea of how long I can run furmark without having to worry about any sort of damage? My temps look fine, but I don't know if I'm comfortable with running it for 24 hours like I did prime.

Thanks in advance guys.

 

[MJinZ]

Yeah, I agree with you mjinz. I turned up the heat and ran prime 95 with furmark and it locked up similarly to how it does in game.

I'm guessing my northbridge wasn't perfectly stable. It was already at 1.59v which is very high, so what I did was just clock my cpu down lower and bring the nb back to safer levels. Now i'm going to run furmark alongside with prime overnight to see how stable it is.

my fsb was at 471, now lowered to 450.

Would you say theoretically that prime + furmark stable would mean game stable? 100% cpu/gpu load. Also can any of you give me a idea of how long I can run furmark without having to worry about any sort of damage? My temps look fine, but I don't know if I'm comfortable with running it for 24 hours like I did prime.

Thanks in advance guys.

No, Furmark is just OpenGL. To get a stable overclock you need to be LinX stable (50 runs or so), Prime stable, Furmark stable, 3Dmark Vantage Stable and OCCT stable. And if you want product longevity, make sure that your temperatures across the board are low.

 

[glorylin]

Ok thanks.

I know everyone has their own preferences, but how long do you normally run prime, furmark, and occt before you consider them "stable".

OCCT has a lot of stress tests as you already now, when you mentioned that were you talking about being stable in everyone of those tests? (linpack, cpu occt (same thing as prime afaik), GPU: OCCT, and GPU: Memtest)

 

[MJinZ]

Memtest doesn't need to be run since most memory is fine, only if you get BSODs during stress tests or general usage.

You just need to pass OCCT PSU test, run 3DmarkVantage and/or '06 OK, 50 passes of LinX, 12-24 hours of Prime, and Furmark at max settings (stress testing) should be fine.

 

[glorylin]

Sorry, I don't want to nitpick, but some of my questions from last post were still not answered. I still want to know how long you usually run furmark/OCCT for and what OCCT tests you run.

To be fair I've already passed the 3dmark/24hoursprime/furmark tests on the prior settings yet I still crashed in game. That's why I was at a loss to what could possibly be the problem.

Another question, do you ever run these stress tests in combination?

 

[MJinZ]

IIRC Auto settings on OCCT is 1 hour, that should be fine. OCCT PSU maxes out your CPU & GPU at the same time. You can also run Furmark and LinX/Prime at the same time for a similar effect.

Since you are failing Prime + Furmark, but not individually, it's possible your power supply can't supply power adequately.

 

[glorylin]

I'm on a corsair 750TX. I should be ok in terms of power.

Could northbridge stability have been a factor when we discuss failing with prime + furmark but not alone? I don't know if running them both at the same time stresses the NB out more, but I imagine it does.

 

[SnOop005]

An Easy way to test if its your mobo/cpu/ram or your videocard: Default your cpu/ram/NB to stock speed and voltage, leave your videocard the way that it is. Do the exact samething (futremark+prime, play some games) to see if it still crashes, if it still crashes then its your videocard, if it doesn't then your OC is not stable.

 

[BTRY B 529th FA BN]

Memtest HCI 2000%
LinX > prime95 > occt
Memtest86 v4.0
Super PI 1m