AMD Radeon HD 7770 & 7750 Launch Review @ Neoseeker
 

The AMD's new Radeon HD 7770 and HD 7750 are leaner and nowhere near
as mean as their HD 7970 and HD 7950 older siblings, but they do
retail at a much lower price. The new cards are intended to tackle
the market sweet spot previously occupied by the HD 6770 and HD 6750,
meaning $100-150 USD price points. Southern Islands goes mainstream
with HD 7770 and HD 7750, now hit our review to see if they're a real deal..

http://www.neoseeker.com/Articles/Ha..._HD_7770_7750/