video card dying 470 gtx

[auonex20]

Computer comes on and i can use it for web browering but if i run a game like LoL/WoW i get 0-15 fps on high settings but i put it on low i get 20-60.
now if i play a game like guild wars 2 or rift it wil shut down as soon as i load in my character and do a mouselook

is it my videocard or not enough power
msi 470 gtx twin frost
power supply 650w
AMD Phenom(tm) II X4 965 Processor 3.4GHz

 

[coozie7]

A lot of sudden shutdowns are temperature related, download GPU-Z and check the card temperatures and Speedfan to check the CPU temperature.
Under idle conditions you should see the CPU no higher than 40C and the card no higher than 50C, in both cases their fans should be turning fairly slowly.
As always with any fault finding, the BIOS should be reset to factory defaults.