Strange behaviour with gfx + cpu overclock

ramdor

ramdor

ramdor

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Joined
22 May 2003
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571
Ok this is a vary strange one.

Equipment as per sig.

cpu is at 3.6gig with a 400 (1600) fsb, multi is at 9, and ram is at 800mhz. cpuvolts are 1.48. Gfx card is a BFG 8800gtx oc2.

I have done multiple orthos runs without probelms for 24+ hrs. Memtest does the whole lot for 18+hrs.

However, when playing 3d game, after a random amount of time (anything from 5 mins to 5hrs), the pc will seemingly freeze. After 3-5 seconds, it will unfreeze, and continue for another 2-3 seconds then freeze again. This keeps happening until either...

a) reboot
b) shut down the 3d app/game

If I shut down the 3d app/game then start up another (or the same) then the freezeing will start again. It is a total pc freeze, teamspeak sound stops, mouse stops etc. Then it will all unfreeze for a moment, rinse repeat. The pc seems fine until I start a 3d game.

It has never blue screened when this is happening or at any other time tbh.

I am sure it is a result of the cpu overclock somehow, as I have been unable to have it happen when running at stock cpu mhz.

Any ideas?

I have tried the release nvidia drivers and betas up to and including 160.03.

Richie.
 
I was wondering if anyone else had similiar problems. Seems strange that orthos can run for ever and a day without issue, yet the gfx card is having problems. Also it is strange how it does the exact same thing every time, which doesnt really suggest random instability.

Richie.
 
Renton said:
I was getting the same problem with my 8800 GTS, it was because i was running ati tool to monitor temp levels. When i went into a 3D app it would over clock my cards mem and gpu. I reset my clocks to standard and the problem went away, was a shame because the overclock gave me great 3d mark scores but just was not stable in bf2142 which i play most. Strangly it was stable in most other games.
Any how i thought it was my cpu overclock but it turned out to be my gpu over clock that was the problem.
Click to expand...

hmm interesting... i have a 8800gtx oc2. It is factory overclocked and running at stock (no overclocking tools installed). I wonder if it playing up somehow. Although I am yet to have it happen when the cpu is at stock mhz, only changing the fsb, leaving volts etc as they are.

Richie.
 
well, I had it happen with the cpu at stock :( Will log the temps from now on to see if it is overheating at anypoint.

Richie.
 
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Playing HL2 for about 3 hrs. No artifacts or anything out of the ordinary during that play time. Then pc just froze up, and went into its freeze-unfreeze cycle.

Temps as follows before just before it died...

logged from everest

motherboard = 30'c
cpu = 36'c
cpu core 1 = 36'c
cpu core 2 = 37'c
gpu = 78'c
gpu diode = 82'c
gpu ambient = 65'c
gpu memory = 79'c

I just ctrl-alt-deleted out of hl2 to get those temps. Whilst in the game it was freeze-unfreeze-freeze etc. Total pc freeze during those freezes, mouse and all. I shut HL2 down and took the numbers from the log.

I then went into the nvidia control panel with the rotating logo. I noticed that there were artifacts on the logo. Check out this fraps vid I took during this HERE. I left the logo spin for a while and after about 2 mins the pc froze-unfroze-froze again. As soon as I start a 3d game from this point it will cause the pc to freeze-unfreeze cycle. If I reboot everything will be fine until some random time has passed and it will freeze-unfreeze cycle again.

This is doing my head in :(

Any thoughts anyone? RMA? It is like 4 days old.

Richie.
 
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