vaconcamp :
So after some looking around I decided I'm going to build a PC with the i7-3820, but I want to know what GPU would best complement that CPU without neither of them bottle-necking eachother. I was looking at the HD7970 or any card around $300. I'm probably gonna use Windows 8 when I make the computer if it makes any difference. I also want a card that doesn't get too hot. Anyone have any suggestions? Also anyone know which brand makes better GPUs? AMD or NVIDIA?
Presuming this build is for gaming, I think you can spend your budget better.
A i7-3820 is a fine $300 cpu.
But, a $230 3570K will perform equally as well, and the underlying Z77 based motherboard will be less expensive.
It would even drive a $1000 GTX690 well. No worries there.
The savings will let you buy a stronger graphics card which is the real engine of gaming.
A 7970 @$300 is a very good price. It competes with a GTX670@380.
You can buy a GTX680, currently the top single gpu card for $480.
For gaming, buy the best graphics card you feel comfortable paying for.
List the rest of your build.
Perhaps there are some other suggestions.