Advice on New PC

[viewtiful]

Hi,
This is the spec I am planning to build.

Case: http://www.ebuyer.com/UK/product/126237
Asus P5-B M/B: http://www.ebuyer.com/UK/product/113965
Core 2 Duo E4300 OC'd to 3GHz http://www.ebuyer.com/UK/product/121407
Then for RAM either http://www.ebuyer.com/UK/product/114722 or http://www.ebuyer.com/UK/product/114721
I will upgrade to 4GB (4x1GB) at some point. Is there any real improvement between the RAM speeds for gaming?
POV 8800GTS 640MB http://www.ebuyer.com/UK/product/119850
Sound Card: http://www.ebuyer.com/UK/product/98938

This is the PSU I am thinking about for it: http://www.ebuyer.com/UK/product/124922
Would this be enough power and the right connectors etc? If not can you reccommend a different PSU from ebuyer that would work (£50 Max)

Also, Overall do you think this is a good DX9 rig?
And although I don't think the specs have been released yet, is there a good chance this will run the likes of UT3, SC:C, Crysis, Call Of duty 4 and bioshock on low settings?

Thanks

EDIT:
Forgot a couple of little bits of info.
I will be having 1 500GB HD but would like the option of upgrading to 2.
I will also be having 1 DVD drive but again would like to be able to handle 2.
I also have a DTV1000-T TV tuner and a Floppy slot Card Reader.

 

[emp]

I don't trust the maker of that GTS, never heard of it. Would rather go with a better known maker.

Use this PSU instead of that cheap POS:

Corsair HX 520W ATX2.2 Modular SLI Compliant PSU

http://www.overclockers.co.uk/showproduct.php?prodid=CA-005-CS&groupi d=701&catid=123&subcat=823

 

[viewtiful]

Since i'm preferably looking at ebuyer,
would this OCZ PSU be any good?

http://www.ebuyer.com/UK/product/127861

I know OCZ are a good make, and also I would get it for about £45 With Google Checkout.

 

[emp]

I'd go with a GameXStream instead simply because it's ranked high on the PSU Tier list.