hey guys im looking to get a bit more power for gaming as my 5850 1 gig is starting to show its age a bit.
my budget would be around 130-150 quid so if any one has any suggestions for a nice bang per buck upgrade it would be much appreciated
oh edit : my pc case isnt very big so no big massive cards please
system specs :
ocz 600 watt psu
phenom II 955 @ stock 3.2ghz
8 gig ddr @ 1333mhz
sapphire 5850 extreme 1 gig
my budget would be around 130-150 quid so if any one has any suggestions for a nice bang per buck upgrade it would be much appreciated

oh edit : my pc case isnt very big so no big massive cards please

system specs :
ocz 600 watt psu
phenom II 955 @ stock 3.2ghz
8 gig ddr @ 1333mhz
sapphire 5850 extreme 1 gig