650W PSU enough?

ringo747 · 5 Feb 2010 at 00:08

Hi,

I am building the following spec:

Is the 750W overkill for this? All I will be adding is more harddrives + maybe a blue ray drive eventually. Would I be better just going with 650W and saving £20?

Ricardox1 · 5 Feb 2010 at 00:11

650w will be fine

Temi_D · 5 Feb 2010 at 00:14

650W will even let you use 2 of the 5850s in crossfire if you decide to

cupofchow · 5 Feb 2010 at 00:14

Im running whats in my sig on a enermax liberty 500W psu for a while now with no probs at all.

Id say 650 is more than enough.

Ricardox1 · 5 Feb 2010 at 00:24

Temi_D said:
650W will even let you use 2 of the 5850s in crossfire if you decide to

yep

ringo747 · 5 Feb 2010 at 07:03

Thanks for the info.

samurl · 5 Feb 2010 at 08:18

Asus P7P55D Intel P55 (Socket 1156) DDR3 Motherboard
Intel Core i5 750 2.66Ghz (Lynnfield) (Socket LGA1156) - Retail
Corsair 4GB (2X2GB) DDR3 PC3-10666C9 1333MHz Dual Channel Kit
Club 3D ATI Radeon HD 5850 1024MB GDDR5 PCI-Express Graphics Card
Corsair H50-1 High-Performance CPU Watercooler
Coolermaster CM-690-II Advanced Dominator Case - Black

Corsair HX 650W ATX Modular SLI Compliant Power Supply

Just for your peace of mind this is the machine I've just built, slightly down specc'd from yours but is no way near to having issues so you should be fine!

ringo747 · 5 Feb 2010 at 10:01

Excellent - that saves me £23!

samurl · 5 Feb 2010 at 10:04

I had chosen the non-modular 850w, until I realised there was actually no need for anywhere near that power, and never would be for my build, so went for the 650w modular, I ended up actually paying about 10pound more I think at the time, but I feel now I've made that decision no regrets

ringo747 · 5 Feb 2010 at 10:06

I read somewhere about going for a higher PSU means it will run more efficiently but not sure on this.

D-Ranged · 5 Feb 2010 at 10:12

I am running

whats in my sig with a corsair 650w and according to the spec page they have where you can say what components your running it will run mega overclocks and everything you can throw at it except for 2x 8800GTX