CPU and Motherboard Temperatures Reaching 80C

[AsianInvasi0n]

I have been looking around and have seen that several culprits to this could be bad ventilation, dusty case, or bad hardware. But my father is thinking that the new graphics card I got, the AMD Radeon R9 270 2GB, is too strong for my current motherboard, the ASUS M5A78L-M LX PLUS. I have been reaching these high temperatures while playing games like Dota 2 and Skyrim (with a few texture mods) but even after turning the graphics completely down on Dota, the temperatures do not drop. While typing this out, the temperatures of the motherboard and CPU (AMD FX-6100) are lingering around 40-50C. Meanwhile my GPU while playing the game was at a max of 67C and is idling at 45C. So what should I do? I have read things about replacing the thermal paste (?) or certain parts in the PC but I have also read things about how the PC is just too dusty or the ventilation is bad. If the latter is true, how can I improve ventilation? Is this a PSU issue? I have had a Corsair CX 750M PSU for a year or two, and it still has a warranty left. Should I replace that?
http://imgur.com/Nc9g2t6 This is a picture of the monitor.

 

[Dark Lord of Tech]

The board is the main issue , it has no heatsinks on the VRM and it only has a 3+1 power phase design , a bad match for the FX6100.

Your card temp really isn't bad.

 

[DonkeyOatie]

There are many possible issues. For a start, even though it is an ASUS board, your motherboard has very weak power phases and I would not use it on a FX6??? CPU for gaming. It is likely that your new GPU has allowed your CPU to work harder, it was limited by the GPU before. This is stressing the power delivery on your motherboard and you are experiencing thermal throttling. running with your case open can help, as can using zip ties to install a case fan to blow directly on the power delivery system (VRMs)

Try this first and see what it does.

EDIT: Snap!

 

[AsianInvasi0n]

The board is the main issue , it has no heatsinks on the VRM and it only has a 3+1 power phase design , a bad match for the FX6100.

Your card temp really isn't bad.

If the motherboard is the problem, then what motherboard would you recommend for me? I am a high schooler so I'm on a bit of a budget right now. Also, the board has worked fine for a few years. Could it just be wearing out?

 

[Dark Lord of Tech]

It's just a bad match , some new thermal paste and a better cooler might help a little , but not really worth it with that board.

 

[DonkeyOatie]

Like I said, my first guess is that your new GPU is requiring your CPU to work harder and the extra load is overheating things.

If in the USA, I'd recommend a Gigabyte GA 970A-UD3P. at $75. That board will run up to an overclocked 8350!


There are some cheaper boards that would limit you to a FX6???, like the GA 970A-DS3P or the ASUS M5A97-LE