i need help with my new gfx card..

[goldensheep97]

I ain't really sure if this right section but i'll go ahead.
I just bought myself a 7970 of my a good friend to me (he had it running in crossfire and didn't need the second card)
And when i bought i instantly mounted it in my computer(cuase i got so hyped haha )
Went to try battlefield 3 at Ultra 1920x1080 but after 10 minutes my computer just instantly shuts down :S
have tried it with low settings and still i get a crash..
Tried other good graphic games like Need for speed:Most Wanted and same thing.. 10 minutes of playing and it shuts down..
the card gets around to 73-76 degrees when it shuts down.
can it be my Power supply becuase it's 500 watt?
on the most sites i look it says Recomended power supply is 500-550 watt.
should i buy a new power supply like 700 watt? or could it be some other problem?

pc specs:
Corsair 8GB (2x4096MB) 1600MHz XMS3
AMD Phenom II X4 965 3,4GHz Black Edition
a Asus M4A77T motherboard (not the usb3 version)
AtI Radeon 7970 3GB VRAM (this is the new card i bought, earlier i had an GeForce gtx 460 1GB)
AXP 500 watt Power Supply.

[hanspirot2]

U definitely need to buy other power supply minnimum 700 W. Did u update GPU drivers? my power supply recommend CORSAIR HX Series HX750 750W ATX12V 2.3 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply - Newegg.com or cheaper one RAIDMAX HYBRID 2 RX-730SS 730W ATX12V V2.2/ EPS12V SLI Ready CrossFire Ready Modular Power Supply, New Version with Build-in LED Fan On/Off Switch - Newegg.com.

[Stevenom]

It's not the total wattage your PSU could provide.
You must look at the AMPs on the 12v rail.
I'd suggest you buy Corsair HX650 or something.

[goldensheep97]

thnx guys for the help
so the problem should be my power supply?

[hanspirot2]

thnx guys for the help
so the problem should be my power supply?

I think not 100% sure.

[Sunstreaker]

thnx guys for the help
so the problem should be my power supply?

or like stated above your drivers...

[IcountToThree]

Try all options before spending money to fix it, although I think it's a problem with your PSU, Personally, I've never had my drivers turn my computer off, only for them to crash and turn the screen black for a minute.

[goldensheep97]

or like stated above your drivers...

well i've updated my drivers just recently from AMD's homepage so it shouldn't be that.