Misterious CPU spikes.

DrSandvich

Honorable
Jan 17, 2014
3
0
10,510
Hello everyone.
I have been looking for a solution everywhere but unfortunately I found none so, here it goes:

Almost 2 years ago I got my first desktop PC, after a while I started upgrading it with a new cpu, graphics card, etc etc and it was all good and well until I decided to change cases, i got a z9 plus, and then suddenly (after everything was put in the new case), I started having cpu spikes while playing several games, dropping my frame rate to about 5-10 every 3 mins or so.



I started looking into it and apparently turning off two of the fans that came with the case seemed to fix the issue. (temps on the cpu and gpu weren't affected by this)

But that was only temporary, as it started happening again.
I ran malware scans and formatted my PC to make sure it wasn't a software issue, so I'm pretty sure its hardware related.

I desperately trying to figure out what the problem is and im not very experienced with this, and im also running on a somewhat small budget (around 130 euros)

My system specs:
-ASRock 960GM-GS3 FX
-Windows 7 Home Premium 64-bit SP1
-Recom Power Engine Plus - 600 Watt
-AMD Phenom II X4 965
-1x 4,00GB Single-Channel DDR3 @ 533MHz
-NVIDIA GeForce GTX 560
-232GB Western Digital WDC WD2500AAKX-001CA0 ATA

Extra devices:
-E2242(LG screen)
-931GB TOSHIBA External USB 3.0 USB
-Logitech ultra flat keyboard
- Rocat Lua mouse
- Gamecom headset(cant find specific model)

To summarize my pc is causing my cpu cores to spike to 100% while playing for no reason whatsoever, it also happened a couple of times on youtube.
So, what can I do?
Thank you in advance.

Update:
Core temps don't show up for some reason while monitoring, frequency drops from 3400 to under 800 (is this normal for AMD?) while running the game, I have been having booting issues, cpu temps dont go beyond 60 celsius and the pc has frozen completely and sound got stuck in loop(sort of a bluescreen).

Update 2:
Changing the process' core affinity to 2 cores apparently solves the issue, but the performance is significantly worse and I have to repeat the process every time I want to play a game, what can cause this?
 

jrgray93

Honorable
Aug 4, 2012
363
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10,860
My first instinct would be a failing PSU. I would try looking into that and working from there. If you have a spare one to try out to verify that, that would be where I would look first. As for that temperature, it is bordering on unsafe for the CPU. It may be throttling because of temperatures.

Also, having the CPU hit 800MHz is perfectly normal. The frequency naturally varies depending on what's going on. That said, it could also happen if the CPU is overheating and throttling itself back.
 

DrSandvich

Honorable
Jan 17, 2014
3
0
10,510


Unfortunately I dont think I do have an extra psu to test that, however the problem started happening only when I switched pc cases, maybe something wasn't correctly installed (I had competent help building it)? If not is there another way to test my psu?
I somehow think its related to the motherboard, I started having problems starting my pc today, but then again, I am not very experienced with this stuff. Forgot to mention, the cpu temps are only like that while playing games and doing other cpu heavy stuff.
 

jb6684

Distinguished
I see no reason for a Case change to cause CPU spikes.....
- if you installed the motherboard incorrectly, too many or too few stand-offs' and screws you could short out or worse, crack the motherboard....

Other than that, running a SINGLE DIMM will really slow down your computer performance. Get a second 1 x 4Gb DIMM so your CPU can run Dual Channel on the RAM
 

DrSandvich

Honorable
Jan 17, 2014
3
0
10,510


Been opened the case and reinstalled everything, problem has reduced quite alot, but gonna du a memtest this night