700 Watt PSU ok for 2X 5850's?

[RavenSEAL]

I don't think you understand what efficiency of a PSU means. It works in reverse. A power supply can use all of its rated power. Sometimes it can actually do more. The crappy units lie, so those can do less. Efficiency relates to how much power it draws from the electrical circuit in your house, not how much power the unit can produce to your system.

Oops, you're right.

Either way, 650W is way too tight for dual GTX570s.

 

[OVerLoRDI]

This should work out perfectly for years:

http://www.newegg.com/Product/Produc...=corsair%20850

I have that PSU, it is powering dual 6970s currently. Fantastic quiet unit.

 

[cusideabelincoln]

Oops, you're right.

Either way, 650W is way too tight for dual GTX570s.

624W on the +12V rails is plenty for stock dual 570s and a 2500K.

 

[RavenSEAL]

624W on the +12V rails is plenty for stock dual 570s and a 2500K.

Oh yea, because i'm sure he doesn't have any fans, hard drives, USB devices, optical drives,SSDs...

Good luck with that 🙄

 

[jiffylube1024]

624W on the +12V rails is plenty for stock dual 570s and a 2500K.

Are you serious!? The TDP of the 570 is 244W, and the 2500K is a 95W CPU, meaning just the CPU and GPUs alone can consume up to 583W; that's without any other peripherals on the +12V rail, and the high liklihood that that 2500K will be overclocked.

That's cutting it a bit too close IMO.

 

[exar333]

Are you serious!? The TDP of the 570 is 244W, and the 2500K is a 95W CPU, meaning just the CPU and GPUs alone can consume up to 583W; that's without any other peripherals on the +12V rail, and the high liklihood that that 2500K will be overclocked.

That's cutting it a bit too close IMO.

Agreed. A quality 750 would be minimum here for optimal results.

 

[TemjinGold]

You spent $1000 on GPUs and want to cheap out on a PSU?

He did?