Random big drop in framerate (even for videos)

depotman

Honorable
Jun 3, 2013
6
0
10,510
Hey,

I've recently noticed a big drop in my video cards performance and I really can't figure out what's going on here. Playing movies on VLC player are a little sluggish, and games are pretty annoying to play despite graphics settings on low (all games I used to play 100% lag free). I've even noticed minecraft having very low FPS which is odd and making me think it's not necessarily my video card but my CPU or something else.

This seemed to have happened quite randomly and the only thing I can narrow it down to is a hardware problem.

Here's what I've tried:

Going back on a restore point, removing any and all viruses and/or spyware, and I also updated my video card. Didnt see a difference after all that. Nothing suspicious seems to be appearing on task manager or anywhere else, although SVchost.exe is being a pretty big memory hog, accounting for about 200k memory, but that may be normal.

My temperatures seem a bit hot (image is attached), but as far as I can tell all my fans seem to be running fine (even my video cards fan).
rLumaqg.png

Also, I think one or two of my temp sensors got loose and are tucked away somewhere so that could explain 2 of those high temps.

Here are some specs:
AMD Athlon II x4 640
Gigabyte GA-770T-USB3
4 gb DDR3 ram
windows 7 64bit
Nvidia geforce GTX 460

One more thing, my PSU went bad a little while ago and I replaced it with what I'd consider a cheap PSU (wattage should be fine). I know you shouldnt get a cheap PSU but I had already bought it before I realized and I figured I'd try it out. It seems to be running fine but I wonder if a cheap PSU can be blamed? However, I've been using it for a few months and haven't had any problems.

Any ideas?
 
Solution


From the attached image and readings, the temperatures look fun unless you are currently running the graphics card under load. Not sure where Temp 1, 2 and 3 are reading from but that is also a bit warm, but otherwise appears normal.

From the +12V reading 11.65V seems a little low. That's also the rail that powers the...

the1corrupted

Distinguished
Jul 15, 2011
74
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18,660


From the attached image and readings, the temperatures look fun unless you are currently running the graphics card under load. Not sure where Temp 1, 2 and 3 are reading from but that is also a bit warm, but otherwise appears normal.

From the +12V reading 11.65V seems a little low. That's also the rail that powers the graphics card, cpu, and motherboard.
 
Solution

depotman

Honorable
Jun 3, 2013
6
0
10,510
Thanks guys.

You both mentioned power problems so I looked into my PC. I noticed a ton of dust blocking my GPU's fan so I made that nice and clean and dust free. GPU temp dropped about 15-20 degrees simply because of that and my graphics are back to normal. Didn't expect that to have such a big impact and it's such an obvious thing to do.

Also, I believe you're right that I have a power problem. The PSU I have only has one 6 pin power connector for the motherboard which asks for two. I didn't think it would be much of a problem using only one but I think I may have to get a better PSU so I can increase my power because I certainly don't want to damage anything in there.

Thanks for the help and responding.