OC'ing 8600GT. Crash when running scaled down res, but OK on native (higher) res?

Hi all,

(see spec in signature)

I'm trying to OC the 8600M GT in my Dell M1530, with the 175.63 driver from LV2G.

Rivatuner was able to push it to 650/901 and got me 5433 in 3DMarks06 @ native res 1440x900 on average of 3 runs, no reboots, no artifacts, nothing. Highest temp. I've noticed was around 85C on GPU core.

Then I changed the res in 3DMark06 (not desktop res.) to 1280x800 and 1024x768 to, you know, get some pretty numbers But as soon as I did that, it would randomly crash and I haven't been able to run it through, not even once.

Well, first I thought maybe this combo wasn't stable enough so I turned it down to 625/880 and 600/850, but still got the same thing... It rebooted in both cases.

How could this happen I wonder... If it runs well on a higher res., shouldn't it be able to pull off lower res. as well?

Any thoughts?

 

your clocks were problay to high and and over heated your computer try overclocking little by little increase and with each increase play a game like COD4 on max settings for about 15 mins and it doesnt crash its fine then try a little higher and repeat the process until you find you perfect over clock. And about the res maby your computer cant fully run the over clock at a lower res, Maby because its a big image its trying to Enhance not to sure.

 

@laptop4life

Thanks for the reply.
I went from 475/702 (stock) to 650/901 in 4 jumps
575/800
600/852
625/880
650/901

Each time I run 3DMarks06 3 times (each run takes about 13 mins), followed by 20 minutes of ATITools to scan for artifacts. While it's not as demanding as some of the real games, I believe it's enough to test for stability.

The res. I tried was listed in 3DMarks so I don't think it was because a big image or something like that... If it was able to run just fine at a higher res., it should be no problem at a lower one, right? Or am I missing something here?

 

I dont think you missing anything i would of thought it would be able to run fine on lower res as well, never heard of the problem was just a theory

 

Thanks

Well hope someone else could shed some light on this.

 

Hmmm, sounds like you and I might have similar problems. I can run 3dmark06 at almost any OC I throw at it. But if I actually try to game, I get a reboot. Like in 3dmark I can do a easy 650/900 oc and temps never go above 78. But if I try to use that in almost any game, I reboot. I think my max for in game OC right now is like 525/825.

M1530, T7250, 8600m GT (but I am sure you figured that out by now).

 

@Tusin
Hmmm... I don't think so my friend.

I just tried Assassin's Creed for about 20 mins @ 625/855 @ 1280x800 with most of the settings at max (with shadows @ 1/3 and graphic quality @ 3/4) and no crash. GPU core temp. was something like 78C.

I tend to think it's a problem with 3DMark06 now...

 

Hmmm, could be a problem with 3dmark. And my problem could be TF2 related. Do you have TF2 by any chance?

 

No... sorry

Just tried NFS 11 and no problem either. Getting more suspicious on 3DMarks06 lol. Maybe I should've tried 3DMarks Vantage instead.

 

I never trusted 3DMark06 to be reliable to test if your clocks are stable or not. It would run perfectly fine for the whole duration, but if I try to run any other 3D game, it crashes within 15 seconds.

 

Thanks Cathy.

So is there anything I can use to test for stability?