Advice on my mates build

[B Newing]

Hello, I'm asking for advice on my mates first build as he is unable to understand TH lol. It's an amd build designed for gaming, web browzing, music and video etc. Also some visual basic. He has already bought some parts (against my advice) these are:

CPU: AMD Phenom II x4 3.4ghz
Mobofinding out later today)
RAM: 8GB Corsair
Case: Vulcan nzxt
HDD: western digital 1TB

The parts he is yet to buy is:
PSU: 750w?
GPU: amd radeon xfx hd 6870

He is too scared to oc...
He plans on buying a second GPU and crossfire with it at a later point. (Does this have to be the same or can it be a different one)

Any advice on the psu and GPU would be great. Thanks.

 

[g-unit1111]

Even Crossfired 6870's won't use the full 750W - you could get by with 650W easily.