New System Build - What is your opinion on it?

Hello to all,

Over the last few months I have bought a little here and there so that I wouldn't end up spending a ton of money at once. If you could please look over my setup and tell me what you think, changes you think I should make and so forth it would be greatly appreciated. The only stipulation is that I want to build an AMD system that uses ATI graphics (preferably Direct x11 just to make the card last a little longer) and I am not looking for a new case either (I will mod my current one).

Budget:
I am trying to build a decent gaming system without going way too over budget, meaning staying below $800.

Anticipated Time of Purchase:
Within the next 2 weeks

Here is my current setup right now:
CPU: Intel Pentium D 2.66 GHz
Vid Card: Radeon X800 GTO
Mobo: AsRock 775 Dual-VSTA
RAM: 1GB Kingston
PSU: 600 W Cooler Master
Monitor: 23" Widescreen acer
Sound Card: Creative Soundblaster SB X-Fi
Storage:650 GB and a 500 GB hard drives (Western Digital)
Computer Case: 20" H x 18" D x 8" W
Operating System: Windows 7 Ultimate when it arrives

New Build:
Motherboard and PSU Combo - $213.98 after mail-in-rebate and 10% off PSU
In case the combo disappears here are the links to the PSU and the Motherboard
CPU - $179.99
CPU Cooler - $34.99
Memory - $83.99
Vid Card - $159.99


Grand Total of: $681.96 after and additional $30 rebate card on the PSU

As I said, any help at all would be greatly appreciated.

Thanks ahead of time.

I would look to switch your RAM to this G.SKILL, since it has tighter tolerences for just a few dollars more.