Summary: The HD7770 is a great budget card with lots of horsepower for sub full HD resolution, and has a small power consumption so it saves you money over time in electric bills. The Sapphire OC version is the one to get as it has an excellent factory overclock that bumps its performance by 5-10% over the stock model.
Right GPU with a Good CPU and your in for a winner
Mr. Justin Coleman "JC Review", Amazon
29 April 2013
Summary: I recently brought this card when building my new PC This card works great with the 8 Core AMD CPU Most people still think that a Top of the range Graphics Cards will do the job, not so. Remember most of the info still goes through the CPU (Processor) before it hits the GPU. So if you get the balance right your in for a winner.
Summary: Couldn't be happier. VERY good Graphics Card for the price. I won't bore with the technical stuff, it's been done to death and is available all over the net but one major plus point (to my mind), is this card's low energy consumption. My PSU is only 375watts and it runs this card no problem. It does need its own power supply from the PSU though.
Summary: got this one on sale under £70 delivered,i can play Most Wanted 2012 on medium/high with about 35-40fps .Assasin's Creed 3 - max settings at about 40fps , Far Cry 3 on high but with some drops to 25fps (all with Fraps) without it it will go higher i guess. it worth the money defo , but not £120 + most sites . Great for budget gaming machine, keeps cool even after 9 hour playing Most Wanted 2012 : very easy to install , takes me max 10 mins .