I need some SERIOUS help!

OK, so I'm leaning towards getting a 4870x2 for $530 for my rig.
My main question is, WILL MY PSU WORK WITH A Diamond 4870x2!? It's the Corsair HX620w
Here is what the whole thing will look like:
CPU : E8400
GPU : Diamond 4870x2
PSU : Corsair HX620w
RAM : Mushkin 4x2GB for 8GB total DDR-800 jedec 5-4-4-12 at 1.8v
HSF : OCZ Vendetta
Case : Cooler Master RC690
Mobo : Asus P5Q-Pro
HD : WD 640GB

How does my rig look? I know it's not the greatest CPU/RAM/Mobo, but I cheaped out a little to get the 4870x2.
I'll OC the E8400 to about 3.6, or maybe 4.

Total comes up to about $1300 CAD, suggestions/opinions please!!!

You should be good on power with the Corsair HX 620w

real 600watt PSU for that system sounds perfectly alright

I got a 4200+ X2, 2GB Ram, Asus A8N-SLI, 5x hard drives and a HD4870, running fine on an el-cheapo 400watt antec PSU.

Even if you dont have enough special pci-e power connectors, the adapters provided with your card should suffice.

That PSU should be fine to power a SINGLE 4870X2. If you want to crossfire latter then you will need a better PSU. If you're really worried about it though visit this link

http://game.amd.com/us-en/crossfir [...] s.aspx?p=3

To check out certified power supplies. Pay attention to the column that tells you how many cards of that type are supported.

From here you can see that it requires a 6-pin and an 8-pin PCI-E power cable:
http://www.newegg.com/Product/Show [...] -%20Retail
Also on that page you can see that your card does not come with the necessary converters (for instance, 6-to-8 pin or molex-to-8 pin).

From this review, the 620HX only comes with 2 6-pin PCI-E power connectors:
http://www.neoseeker.com/resourcelink.html?rid=127595

So you'll need a 6-to-8 pin converter, like this:
http://www.newegg.com/Product/Prod [...] 6812198016

I would use both of the PCI-E cables on your power supply but use the converter to change one of them from a 6-pin to an 8-pin.

Alternately, a Corsair 650TX has two PCI-E cables that can function as either 6 or 8-pin, however you lose the modular cabling design:
http://www.newegg.com/Product/Prod [...] %20650%20w

I have a very similar set up except for the video card. ( oc'd HD2900 pro ).

I am also using that same PSU and it did come with 2 - PCIE 6+2 cables. I'm guessing the cables were upgraded since the time of the review that qwertycopter provided in the link.

hope this helps.

I'm sure it was around late Feb or March of this year that I built my current computer, so I'd guess about 5-6 months ago.

hope this helps.