Lower Performance After Computer On For Few Hours?

Steve The CPU · Sep 18, 2014

Hello, I've recently built my own computer and I've noticed after 1-2 hours my frames in games drop significantly. I've tried benchmarking with heaven benchmark 4.0 right after boot and an hour after boot I received 2 significantly different results. When i benchmark it right after boot i get around 60 fps and when i do it an hour after i booted i get 30 fps and if i keep it on any longer it can go to 20s also.

Jameson Clark · Sep 18, 2014

I would check temperatures and also the memory usage.

Steve The CPU · Sep 19, 2014

idle is around 50 ish i have a gtx 770 how do I check memory usage ?

Beezy · Sep 19, 2014

Probably throttling due to overheating. What CPU do you have. 50 at idle is kinda high.

Steve The CPU · Sep 19, 2014

evga gtx 770

Jameson Clark · Sep 19, 2014

What Cpu not gpu

Steve The CPU · Sep 19, 2014

i5 4670k

Jameson Clark · Sep 19, 2014

Have you checked your temps while gaming or during a stress test? That is very high for idle, I would expect it to be 15 or so degrees cooler at idle depending on your ambient temp

Steve The CPU · Sep 19, 2014

i've tried running heaven 4.0 and it reaches around 70 degrees celsius ish, but i haven't tried it on the whole time as the fans were extremely loud i was afraid something was going to happen lol

Jameson Clark · Sep 19, 2014

Heaven isn't a CPU stress test it's a gpu which makes it quite concerning that the CPU was at 70. I'm talking prime 95 or intel burn test which will heat your CPU more than anything. It's fine that your fans are running at max, they should and it's not a problem for them for run that fast.

If you run either of those keep an eye on your temps, if they get to 80 stop the tests. My hunch is that will happen quickly. Your CPU is at stock settings correct? What CPU cooler do you have? I bet you need to reseat your cooler

Beezy · Sep 19, 2014

Jameson Clark :

What this sounds like is the PSU isnt up to the job probably or general overheating.

The GPU is under-performing, it can go up to 90C so something is keeping it from getting there. If heat is the problem, its throttling, you need more airflow in the case. open the side panel and stick a fan blowing inside (to get big airflow). If you see significant performance gains it was overheating.

If you see no gains from running cooler, the PSU is probably just not up to the job. Make sure fan profiles are set to go to 100% for CPU and GPU (BIOS/ASUS GPUtweak respectively).

What PSU do you have?

Steve The CPU · Sep 20, 2014

The CPU is at 40 ish idle and the GPU is at 50 ish idle sorry for the misunderstanding. I have a CX600M PSU.

Steve The CPU · Sep 20, 2014

I personally think my computer has decent air flow, cable management is alright i have 2 intake fans and one exhaust fan

Beezy · Sep 20, 2014

Steve The CPU :

maybe the PSU has a failed part inside, it doesnt sound like the components are getting enough power, or motherboard/PCI settings somewhere are not right.

Steve The CPU · Sep 20, 2014

how can i fix this and how do i know if its my PSU or motherboard/PCI settings ?

Beezy · Sep 20, 2014

Steve The CPU :

hmm if you have another PSU to test with (A friends maybe?) that would be the easiest

Steve The CPU · Sep 20, 2014

i don't think any of my friends have a power supply suitable for my computer (either laptops or prebuilt desktops with insufficient power supply) any other alternatives ?

Beezy · Sep 21, 2014

check for a BIOS update?

Steve The CPU · Oct 11, 2014

sorry this is very late, I've checked the BIOS Update and it's at the latest currently. I actually noticed it rarely happens now, however it's not after the computer has been on for awhile, it happens randomly from boot. I don't understand my computer and if I built wrong in some way.

Lower Performance After Computer On For Few Hours?

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