Verifying a config pc gamer

I count up my pc with the following config (inspired by another site), prices have just Reduce, I buy everything at the same location to reduce shipping costs.

1. Intel Core 2 Duo E7400 - 2.80 GHz - 65 Watts-0.045μ (119 €)
2. Motherboard MSI P45 Neo3-FR - 775 Socket for Intel Pentium D / P4 / Core 2 Duo / Quad Core (95 €)
3. graphics card Radeon HD 4850 - 512 MB GDDR3 - PCI-Express 2.0 (118 €) (The golden sample is really needed, to 145 €)
4. Memory Kit 2 Barrettes KINGSTON DDR2 PC2-6400 - 2 x 2 GB (4 GB) 800 MHz - CAS 5 - Dual Channel - KVR800D2N5K2/4G (45 €) (The mark is correct?)
5. Hard Drive 3.5''Maxtor DiamondMax 22 - 500 MB 32 GB 7200 rpm - SATA II - Bulk (53 €)
6. SAMSUNG 22X Internal DVD Burner - SH-S223F - SuperMulti - SATA - Bulk Ivoire (18 €)
7. Power Supply OCZ Silencer 420 Watts (64 €)
8. GigaByte X1 PC Enclosure - Black (No Power) (40 €)

That would be to play the game as recent COD4, GTA4, Splinter Cell Conviction ... etc And not to be passed too quickly.

It's the total budget of around 550-570 euros, I can not overcome, so I await your comments.

Maxtor, we forget. Samsung SpinPoint F1, or Western Digital Caviar Blue. Ultimately, Seagate 7200.11. For the graphics card, no, but it is better if you do not want to hear all the time fan of your HD4850. For the motherboard, it is super expensive given what it offers! A-P43 Asus P5QL-E will be better in my opinion. The food, for the same price, you find a Corsair VX450 I think, therefore it is better to take the Corsair.

it's there, it's very good. For you must order against two different sites?