Tom's Hardware > Forum > Graphic & Displays > Nvidia > Driver crashed, core clok drops to 400

Driver crashed, core clok drops to 400

Forum Graphic & Displays : Nvidia - Driver crashed, core clok drops to 400

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zachary k   11-05-2009 at 05:23:18 AM

sometimes, when i am playing a game, the driver crashes and the core clock drops to 400 and kills my framerate. anyone know what can be causing this?
evga 260 (216) core clok=690 mem clok= 1053
asus p5n-d
core 2 duo @ 3.4GHz
ocz 700W PSU

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Bronze Graphics badge EXT64   11-05-2009 at 05:25:22 AM
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Core clock dropping could either be it going into low power (power saving) mode since it is no longer doing anything, or it could be downclocking due to overheating. Run a program like HWMonitor in the background that records max temps to make sure the card is not overheating. Does it happen a lot?

------------------------------ Phenom II X4 940 BE 3.0GHz - 1.25V > GA-MA790GP-DS4H > XFX ATI 4850 1GB > 4GB OCZ Platinum 1066MHz 5-5-5-15-2T > PCP&C 610W
Athlon II X2 250 3.0GHz > GA-MA770T-UD3P > Sapphire ATI 4650 512MB DDR3 > 4GB OCZ Platinum 1600MHz@1066MHz > XP/Win7 Enter 64
 Reply to EXT64
zachary k   11-05-2009 at 05:28:30 AM
- 0 +

not often, jut enough to be annoying. and its running at a cool 57 ish temp.

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Bronze Graphics badge EXT64   11-05-2009 at 05:29:13 AM
- 0 +

Is that idle or max?

------------------------------ Phenom II X4 940 BE 3.0GHz - 1.25V > GA-MA790GP-DS4H > XFX ATI 4850 1GB > 4GB OCZ Platinum 1066MHz 5-5-5-15-2T > PCP&C 610W
Athlon II X2 250 3.0GHz > GA-MA770T-UD3P > Sapphire ATI 4650 512MB DDR3 > 4GB OCZ Platinum 1600MHz@1066MHz > XP/Win7 Enter 64
 Reply to EXT64
Bronze Graphics badge EXT64   11-05-2009 at 05:36:35 AM
- 0 +

Yeah, that's fine. And unless the PSU is bad it should be plenty. If you haven't already I'd stress test the rest of the components (Ram/CPU) to make sure they're all stable with something like Prime95. Otherwise, it may be software related (try other/newer drivers).

------------------------------ Phenom II X4 940 BE 3.0GHz - 1.25V > GA-MA790GP-DS4H > XFX ATI 4850 1GB > 4GB OCZ Platinum 1066MHz 5-5-5-15-2T > PCP&C 610W
Athlon II X2 250 3.0GHz > GA-MA770T-UD3P > Sapphire ATI 4650 512MB DDR3 > 4GB OCZ Platinum 1600MHz@1066MHz > XP/Win7 Enter 64
 Reply to EXT64
zachary k   11-05-2009 at 05:55:26 AM
- 0 +

how would i test the power supply? i know CPU and ram are more than stable and i have the newest drivers from nvidia.

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Bronze Graphics badge EXT64   11-05-2009 at 01:01:21 PM
- 0 +

I confirmed that GTX260's do downclock when at idle, so that probably is what you are seeing. It should jump back up when you start using it again. As for the power supply, I don't have a really good way of testing, but one quick check you can do is again with HWMonitor; run it in the background and see how much your +12V varies from what it was at idle. Big variations could indicate issues.

------------------------------ Phenom II X4 940 BE 3.0GHz - 1.25V > GA-MA790GP-DS4H > XFX ATI 4850 1GB > 4GB OCZ Platinum 1066MHz 5-5-5-15-2T > PCP&C 610W
Athlon II X2 250 3.0GHz > GA-MA770T-UD3P > Sapphire ATI 4650 512MB DDR3 > 4GB OCZ Platinum 1600MHz@1066MHz > XP/Win7 Enter 64
 Reply to EXT64
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