Intake or exhaust fan. Which is better?

Peejay _

Reputable
Mar 24, 2014
9
0
4,510
Hey

I've got this old desktop laying around and I had the idea to resurrect it into a HTPC. I ordered a new graphics card to support 1080P... But I noticed that I only have a CPU cooling fan in my case. I'm worried that it'll get too hot in there so I thought about installing an additional fan. I'm now wondering if I should make this fan intake or exhaust.
(I've got some spare room at the back of this case)

Any ideas?