Replacement PSU - SLI GTX 770's

thel33ter · 7 Dec 2014 at 11:31

My Corsair CX600 died sometime between going to bed last night and waking up this morning which kinda sucks, so I'm going to use the opportunity to upgrade to a PSU that isn't awful, and future proof it so I can SLI sometime soon.

Requirements are at least semi modular and capable of powering 2 GTX 770's, 3 drives and preferably the rest of the computer as well

And budget is reasonable as possible cause student.

I was looking at either of these, but I'm leaning toward the Be Quiet while its still cheap. Any other suggestions/Would these be enough?

YOUR BASKET
1 x Seasonic M12II EVO Edition 850W '80 Plus Bronze' Fully Modular Power Supply £79.99
1 x BeQuiet Pure Power L8 730W '80 Plus Bronze' Modular Power Supply - With 120mm Silent Wing Fan Built in £79.99
Total : £169.58 (includes shipping : £8.00).

thel33ter · 7 Dec 2014 at 11:42

What does the £30 premium on those provide over either of the ones I found, 80+ ratings nonwithstanding?

thel33ter · 7 Dec 2014 at 11:53

Doing some very vague maths, 750w assuming a draw of 250w from each GPU plus everything else will be really tight. Hence looking at ~850w.

I'll eat baked beans for the next few weeks and probably will go for the EVGA 850w gold G2 Supernova thing. 10 year warranty plus I prefer the way it looks.

Cheers Guys

thel33ter · 7 Dec 2014 at 12:06

NVIDIA recommends at least a 600 Watt power supply with a minimum +12V current rating of 42A for one GeForce GTX 770 video card. Since each card has a 250W TDP, it is safe to assume that you should have a 850W or larger power supply for a setup like this.
Read more at http://www.legitreviews.com/nvidia-...d-nvidia-surround_2210/11#TZ5M0RzapkPrGCWr.99

Bottom of the review says that. Although I'd agree that a 750w sounds fine from those numbers.

I'll have a think, the 750w G2 is a chunk cheaper. But PSU's are most efficient at 50-60% load so you can argue for both sides.