Critique my budget gaming rig build $800-900

[mk86]

Hello all, after scrapping my new gaming rig list about3-4 times i have come up with yet another setup that im hoping works out. I am looking for critiques, part replacements or whatever it takes so i get the best bang for the buck First let me just tell you I am from Canada and looking to buy all my parts in-store to avoid all S&H taxes, I got all my parts but the psu from pccanada.com which is the closest and at the same time cheapest store near me.

Setup:
-Asus® Radeon EAH4870/HTDI/512M - Radeon™ HD4870 VPU w/512Mb DDR5 & PCI Express 2.0 (Retail Box) $299.99 $30.00 mir
-Antec® Three Hundred Ultimate Gamer Case, Black $59.99
-Asus® P5KPL-CM, Socket 775, Intel® G31 Chipset w/ PCI Express x16 (uATX) $69.99
-OCZ 2Gb PC6400 DDR2 EL Dual Channel Gold Gamer eXtreme XTC Rev 2 Edition (OCZ2G800R22GK) $54.99 $20.00 mir
-Intel® Core™2 Duo E8400, 3.00-GHz @ 1333Mhz w/ 6Mb Cache (Socket 775) (Retail Box) w/ Heat Sink & Fan $179.99
-320GB Seagate Barracuda 7200.10 ATA-100 7200RPM 16Mb OEM $69.99
-OCZ OCZ500SXS StealthXStream 500-Watt Power Supply - SATA Ready, PCI-Express Ready $73.99 $20.00 mir

My last minute change was an upgrade from a 4850 to a 4870 , but i had to pick up a cheaper mobo. I don't plan to use crossfire, my main concern is will that mobo be good enough to handle this setup ? Thanks a lot guys... awaiting some responses.

[liambl]

I would choose a faster motherboard for that build, something with at least a P35. The P5K Pro is a good choice.

[Dave21]

Try getting the seagate 500gb 7200.11 instead. Better bang for the buck.