Top notch computer lagging with low cpu usage on games?

  salamandrass 16:48 02 Jan 2015

Hello. A few months ago I bought a gaming computer worth about $1500, I believed everything to be top notch so I won't need to change anything any time soon.

CPU: AMD FC-9590 Eight-Core Processor 4.72GHz RAM: 12GB GPU: AMD Radeon R9 200 Series Motherboard: Gigabyte 970A-D3P HDD:WDC WD1003FZEX-00MK2A0 ATA Device OS: Windows 8.1

This is an incredibly strong computer and should not have any problems, but when I play games, I experience FPS drops when there are too many things on the screen or too much stuff happening, when it begins, it lasts 2-3 seconds then returns to normal. Then it happens again when going too fast while driving, too many characters on screen, looking at a large landscape etc...

I find that closing Chrome and disabling Explorer helps a bit but not too much. I notice my disk performance spiking up to 100% sometimes, and when I startup it stays at 100% for a while, and also when i'm transferring files.

One thing that one of my friends pointed out is that my CPU isn't supported by my Motherboard, I didn't build this computer myself, but rather a technician did and I just picked out the parts, so I don't know what happens if they mismatch, just putting that info out.

I monitored the temp while these lag spikes are happening and they're constant at 50C-55C and maximum frequency is at 100%, so I don't think any throttling is happening, i've got all power saving settings off anyways. I also ran chkdsk /r and that didn't turn up anything.

So, why is this happening to my "top notch" computer even when it should play anything with ease?

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