Will a corsair 520w handle?

It depends more on how many hard disks and optical drives you have, although that 2900XT will draw a lot of power. I'd say the 620w just to be safe.
 
Personally I'd risk is with the 520w, unless that 2900 draws tonnes of power. I'll try to find out how thirsty they are :p

:edit: Actually I seem to remember reading that PC's use a lot less than 600w, and I've just read that you'll only really need more than 600w for crossfire/sli.

I'd go for the 520w, they're great PSU's anyway so it's not like it'll blow up if you push it too hard (like some units will).
 
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The 520W will be fine tbh.

My machine coped fine on an Antec NeoHE 550W when I borrowed a Q6600 to test, and thats with 6 HDD's and two DVD-RW's, a 2900XT, and a motherload of high-CFM fans all at full whack.
 
The 520w will easily cope, the 620w has been demonstrated with quad-core, watercooling, SLi'd 8800series cards and multiple hard drives so I'd have no worries with the baby brother for a single graphics card system. :)
 
So say i was running a mild overclock of 3Ghz on the q6600 and overclocked the 2900 with the two hdd's 4gb ram and one optical drive, and the system was at load the 520w would be enough?

Im still inclined towards the 620w just to be safe
 
Just posted on the corsair@certain site forum to see what their response is, then i can blame them if it doesnt work and not you guys :p because well...you were only trying to help :)

Much appreciated.
 
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Taking that into account

OCed id push the 2900 up to 200W load (possibly higher?)
Oced the q6600 to 120W load instead of 87
Two HDD's at 30W
1 DVD burner 15W
4 Case Fans 30W (Antec 900 Case Fans On Full)
4 Gig Ram (Not sure how many watts they would pull)

Totals: 395W at full load (420 including ram? leaving 100W headroom)

So im going to go with you guys on this one and get the 520W Corsair :) Hopefully ive calculated correctly, feel free to change the power output as you see fit.
 
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Well I've got one running here. I've got:

2900XT
3 Hard drives
DVDRW
E6600 @ 3GHz
5 120mm Antec fans @ full.

Just to give you an idea. :)

But you will be fine. Also, the corsairs have started shipping with the 8pin PCIE power connector for the 2900XT. Not a big deal, but it's an added bonus :)
 
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