Which Is Best For My PC

What games do you want to play and at what resolution.....

Also could you give the details of your PSU make and model...

i would get a amd 7770 Ghz edition but we dont know what the psu is

Its impossible to say which card is best until we get all the details, which reminds me.... budget?

make sure to oc your cpu to get the most performance out of it ?

PSU- Not Sure
Budget - No More Than £200
720p I Wanna Play And Games Like Black Ops 2 BF3 Ect

Probably looking at a Gtx 660 or a 7870....

You may need a PSU upgrade too though...

Can you find out the exact make and model?

Edit: sorry missed the 720p part, you could probably get something a little less powerful.. but these cards are well priced at the moment