PSU for i7 build

[xenolalia]

Hi,

I'm considering various options for power supplies. At the moment, my system looks something like this:

i7 930 -- planning on OC
Radeon HD 5830
6GB DDR3 1600
GA-X58A-UD3R Mobo
WD 1TB Caviar Black hdd

Questions:

1. 600W psu sufficient? eXtreme psu calc suggests ~550W; not sure how closely to adhere to that number.

2. Any specific suggestions for psu's? In general, I'm looking for energy efficiency, and I'm not really sure how to interpret specs @ newegg (>80% efficiency -> how much greater?)

Thanks very much!

 

[xurwin]

corsair 650watts.

 

[xenolalia]

Thanks for the speedy reply!

I've been looking at that psu: how does it compare in energy efficiency to something like Cooler Master 650W

http://www.newegg.com/Product/Product.aspx?Item=N82E16817171052

or even Corsair 550W?

Thanks again!

 

[xurwin]

corsiar brands are much more reliable. i assure you.

 

[xenolalia]

So, I've been doing some reading, and I have an updated question:

Corsair 650 HX vs. TX?

 

[xurwin]

i think HX is the modular type which is easy for cable mangemet and TX is the non modular. i think not sure though. but thats the difference

 

[duk3]

HX also costs more and has higher efficiency.

 

[xenolalia]

One more question:

What about Corsair VX550?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139004

Cutting it too close?

 

[foxmulder13]

Corsair are good ...better would be Ultra X 4 750 0r 850

 

[xenolalia]

Corsair are good ...better would be Ultra X 4 750 0r 850

I've read different opinions about this:

http://www.tomshardware.com/forum/252702-28-which-1000w-ultra-corsair

vs.

http://www.overclock.net/power-supplies/543200-ultra-vs-corsair.html

But back to my question, would VX550 be cutting it too close for my needs?

@foxmulder13 750W/850W seems like a lot; do you really think I need that much power?

Thanks very much!

 

[janxta]

CORSAIR CMPSU-650TX 650W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7 Power Supply
Save $10 with promo code EMCYSNV26, ends 6/2 on newegg. Brings the price equal to that of the 550 watt and has free shipping, nuff said?