GTX 660 FPS in Games slowly depletes untill snails pace - HELP

ibobotastic · Apr 25, 2013

I have a EVGA Gtx 660. My processor is (sadly), an Amd a8 Black apu. My power supply is a corsair 430 watt. Before anyone says that my processor was meant to be in dual mode with the radeon 6670, I already know. Anyways, in games, they start out mostly great, with like 60 or more fps, then it slowly depletes until I'm running at like 15-30 frames. My suspicion is my power supply, could also be my processor, could you guys help? Also some games appear to be very stuttery and yet they still maintain a good frame rate.

barto · Apr 25, 2013

I would bet PSU as well. No psu is 100% efficient. GPUs only use what is need to run the game. So games that are GPU dependent, the 660 will try to pull more power.

Kari · Apr 26, 2013

sounds more like overheating problem, what kind of temps are you getting when the games start to slow down? If the cpu or gpu gets too hot it will throttle down the clockspeeds to prevent heat damage. the throttling point for the gtx660 is likely to be 100 or 105C, not sure about the APU though

edit looks like it might be 70c on the apu
http://www.tomshardware.com/reviews/a8-3870k-apu-overclocking-guide,3260-2.html

ibobotastic · Apr 26, 2013

barto :

Kari :

Just played a bit of bioshock, the temps stay around 50...

iam2thecrowe · Apr 26, 2013

ibobotastic :

what temps? the gpu or cpu? the problem you describe is almost certainly a throttling problem due to high temperatures. also check your gpu useage and throttling with msi afterburner, play a game, and when the fps drops, exit the game and look at afterburners stats, check if the clock speed of the gpu dropped when you experience the problems. also check the cpu temps and throttling, in fact turn off cool and quiet or any other power saving/throttling features in BIOS if the cpu is not overheating. Oh, and in NVidia control panel select "maximum performance mode" in the settings.

ibobotastic · Apr 27, 2013

iam2thecrowe :

ibobotastic :

what temps? the gpu or cpu? the problem you describe is almost certainly a throttling problem due to high temperatures. also check your gpu useage and throttling with msi afterburner, play a game, and when the fps drops, exit the game and look at afterburners stats, check if the clock speed of the gpu dropped when you experience the problems. also check the cpu temps and throttling, in fact turn off cool and quiet or any other power saving/throttling features in BIOS if the cpu is not overheating. Oh, and in NVidia control panel select "maximum performance mode" in the settings.[/quotemsg]

I will test the temps now, one thing though. If this is indeed the problem, what can I do to fix it?
[/quotemsg]

ibobotastic · Apr 27, 2013

Well, when it happens my gpu clock is at like 300 mhz, and the voltage is at 800. I havent checked my cpu, cant figure out how, how do I solve this?

iam2thecrowe :

ibobotastic :

what temps? the gpu or cpu? the problem you describe is almost certainly a throttling problem due to high temperatures. also check your gpu useage and throttling with msi afterburner, play a game, and when the fps drops, exit the game and look at afterburners stats, check if the clock speed of the gpu dropped when you experience the problems. also check the cpu temps and throttling, in fact turn off cool and quiet or any other power saving/throttling features in BIOS if the cpu is not overheating. Oh, and in NVidia control panel select "maximum performance mode" in the settings.

smeezekitty · Apr 27, 2013

300MHz is way too low for the GPU clock (sounds like idle).
It should be around 900 for gaming.

ibobotastic · Apr 27, 2013

smeezekitty :

Yep. Whats going on?

iam2thecrowe · Apr 27, 2013

the gpu is going to idle clocks for some reason. I would suggest complete driver uninstall with Driversweeper utility, it must be run in safe mode to remove everything. uninstall any NVidia and AMD display drivers with it. Download and install only the latest whql NVidia driver. I would also update the bios for your motherboard, and the video card bios if an update exists from evga's website. I had the same problem as you with my gtx660, it only seemed to happen in crisis 2 though and only occasionally, would drop to idle speeds. latest driver and going into NV control panel and changing from "adaptive" to "maximum performance" and I havnt had an issue since.

ibobotastic · Apr 27, 2013

iam2thecrowe :

I will go ahead and do that. Real fast, I wanted to share these screenshots of gameplay and clock speeds as well as framerate.

Here is cod waw at the very start of the game. http://gyazo.com/e6596d72f33258f47a3c1d00664269e1 , 71 fps, cpu was acting normal. and the gpu was at normal speeds as well.

Fast forward ten minutes. http://gyazo.com/da97bfbd326b341ee677d8be70ac6dd0. 37 fps, and 300 mhz?

and here we are at 15 mins: http://gyazo.com/b5279b09c0353f531e0ed407cea43f38 17 fps

Also, it seemed to do fine under stress tests. http://gyazo.com/1de1ea6343c679033690379728bbff13 I just dont understand it. Will be doing driver updates and such now, will get back to you.

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