Power supply options for i5 750 ati 5770

[no_alone]

Hello,
I have some options for my power supply and I wanted to know your opinion
The pc is
i5 750
ati hd 5770
1 hard disk
Thats all that matter right, Anyway how much volt do I need to this one?
I have some options in my price range:

Hec 600W WIN+600
Corsair CMP SU450VXEU <-- 450W
OCZ 500W StealthXStream OCZ500SXS
Seasonic 500W S12II-500 Bronze

all those above are the same price...

The thing is that I do not know how much power the system need?
In corsair website I sow that 450 in enough , But I'm not so sure//
Any help?

 

[requiemsallure]

do you ever plan to crossfire the card?

 

[tecmo34]

SeaSonic or Corsair.... Get the one that fits your budget (I lean toward the SeaSonic myself)

 

[Silvune]

100W for i5, 110W for 5770, assuming you have nothing else that requires a significant amount of power, add 100W for everything else/buffer, totals 310W. So a 500W would be fine even if you did crossfire the 5770.
If they are all the same price I think I would go for the Seasonic as well.

 

[requiemsallure]

if you are going to crossfire in the future i would get this one.
OCZ ModXStream Pro OCZ700MXSP 700W $59.99 after rebate and promotional code.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817341018

if you are not going to crossfire ever i would get the seasonic that you have on your list.

 

[JackNaylorPE]

Let this "do the math for you as to size:

http://www.antec.outervision.com/

I'd start with the list here to choose which one:

http://www.silentpcreview.com/Recommended_PSUs

It's rare to find a bad Seasonic PSU but I have read no reviews on that particular unit.

s for the Corsair, looks like your talking about this one

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story3&reid=64

Another comparable unit would be the Antec EA-500 which gets the same 9.5 performance rating as the Corsair above:

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story4&reid=35

 

[no_alone]

no crossfire ...

Thank you very much guys , If you say seasonic I think I'll go for the seasonic

 

[tecmo34]

I vote SeaSonic