I play a lot of games on my grandpa's computer and it plays most games fine. However when I want to play any source games like HL2, L4D or Portal it slows up considerably especially in outdoor scenes.
My first question is what would be a good relatively cheap graphics card, about 120$
atm or cheaper that would be able to run source games smoothly. My second question is how hard is it to install a graphic's card, I've put in things like CD/DVD drives and ram before is it any harder than that?
I did a little research and I found out the computer has the following slots inside
PCI: 2 Slots
PCIe x1: 1 Slot
PCIe x16 (Graphics): 1 Slot
LINK to product page