Question regarding the CM Real Power M620 psu

[supersnicker]

Dear reader,

I've tried calculations on the internet and stuff but I don't really trust them.
A friend o' mine wants to add another Radeon HD 4890 to his comp and he already has the following:

Case: Antec Ninehundred, with a 200mm fan and 5x 120mm fans
GFX Card: XFX Radeon HD 4890
Motherboard: ASUS P7P55D-E
RAM: OCZ Obsidian Series Triple Channel Kit 6GB (3x2) DDR3 1600MHz
CPU: Intel Core i7-860 @ Stock, might want it oc'd in some time
PSU: Coolmaster Real Power M620
HD: WD Caviar Black 1TB 7200 rpm 32 mb

Now, he wants to add another 4890 as mentioned earlier, but I'm not entirely sure if his PSU will hold it together as I have had bad experience with power supplies in the past (not mine, luckily) and I have no experience with Cooler Master PSU's either.

Could anyone tell me if the PSU will hold it ?

Thanks in advance!,
-Patrick

 

[Pyroflea]

It'd be pushing it, but it still falls within the limits of the PSU. To be honest, it's so close, I'd get a 750w or larger.

 

[supersnicker]

Thanks for the reply, I will tell him. I'd suggested him a Corsair HX750 earlier this evening, but wether he has/wants to pay that is up to him.

 

[davcon]

I own one a HX750 and it puts out over 900W.
Great unit and quiet too.

 

[ksampanna]

A quality 650W PSU will handle the rig fine. I just don't think CM Real power will be able to. A similar powered Corsair or Antec will be good enough. Go 750W just to be safe & sure. My money's on the 750TX too.