Power supply concerns for a build I'm working on

[Damar]

I'm going to be putting together a machine for a friend.

He had a power supply from his old machine he wanted to use, and said it should be adequate for the new build, but I'm kinda leery, and not a power expert, so though I would post here and get some opinions.

The power supply he wanted to use is a Thermaltake 550W. It's not the Toughpower line though. I don't have it in hand yet to examine it, but the 550W is correct.

The new machine that needs to be powered will be.....

Intel Core2Duo E6850 (Dual 3.0Ghz)
2 GB Crucial Memory
2 x 7800 GTX Video cards in SLI
4 Hard drives (various sizes and interfaces)
DVD-Burner
5 x 120mm Case fans with LED's

I guess its the two 7800 GTX's and the CPU that concern me the most, but maybe I'm wrong. Personally I usually go way over on the power supply when I build a box so it will last through several upgrades and not be running at full load all the time.

Opinions??

 

[gigabyte1024]

How old is the PSU?
It might squeak by, but the SLI is the killer.

If it's more than 2 years old, get a new one. The PSU is the most important component, you wouldn't want all those new parts to melt because of a crappy PSU.

Look at a Corsair HX620 or any other of the popular recomendations 'round here.

 

[Damar]

It's almost but not quite 2 years old I think.

Looks like I'll be giving him the bad news and hitting up NewEgg for a newer supply.

I'll check out that Corsair one, thanks a lot for the comments, it verifies what I was sorta scared of.

Can't ever have too much power in a PC.

EDIT - I checked out that supply on NewEgg, $149.99 after a $20 rebate, sounds good to me!!

Order placed!

Thanks again!!