HD7950 Power Supply Requirements

[felang]

I´m ready to upgrade from my HD5870 and am looking into getting an HD7950. I am currently using a Corsair 520HX (have had it for about 5 years).

Will this power supply be enough to power a 2600K (@4.5ghz) + HD7950? Additionally I run an SSD, two HD, and 4 case fans.

If I have to upgrade my PSU, I probably would hold on to my HD5870 for a while longer. I only game at 1080p so don´t really need to upgrade video card just yet. Also, I´m not looking to crossfire any time soon, I´m not really a fan of multi GPU configs.

 

[MrK6]

I´m ready to upgrade from my HD5870 and am looking into getting an HD7950. I am currently using a Corsair 520HX (have had it for about 5 years).

Will this power supply be enough to power a 2600K (@4.5ghz) + HD7950? Additionally I run an SSD, two HD, and 4 case fans.

If I have to upgrade my PSU, I probably would hold on to my HD5870 for a while longer. I only game at 1080p so don´t really need to upgrade video card just yet. Also, I´m not looking to crossfire any time soon, I´m not really a fan of multi GPU configs.

The 7950 literally uses the same amount of power as an HD5870:
http://images.anandtech.com/graphs/graph5476/43907.png
As long as you don't start pumping insane volts through it (good luck with no VRM cooling on most models), you should be fine.

 

[felang]

The 7950 literally uses the same amount of power as an HD5870:
http://images.anandtech.com/graphs/graph5476/43907.png
As long as you don't start pumping insane volts through it (good luck with no VRM cooling on most models), you should be fine.

Thanks! According to that graph I could probably even get away with a 7970... and the price difference being what it is, might as well go for one of those...

 

[MrK6]

Thanks! According to that graph I could probably even get away with a 7970... and the price difference being what it is, might as well go for one of those...

I think that would be an excellent move. As long as you don't go crazy with the volts, you should be fine. My 7970 + i5-2500K only pulls about 350W from the wall, and therefore uses ~280W, and this is overclocked to the CCC limits. However, once you add voltage, the consumption goes to 500W+ from the wall 😱.