Hello, i put together a build for my new pc =) What do u think is it alright?

Asus P5Q Deluxe Intel P45 (Socket 775) PCI-Express DDR2 Motherboard

Gigabyte ATI Radeon HD 4870 512MB GDDR5 TV-Out/Dual DVI/HDMI

Antec Twelve Hundred Ultimate Gaming Case

Corsair (TWIN2X2048-6400C4) 2GB (2x1GB) DDR2 800MHz/PC2 6400 PC Memory

Kingston 1GB Kit (2x512MB) DDR2 800MHz/PC2-6400 - CL5 - Non-ecc

Intel Core 2 Duo E8500

CPU Cooler Master Hyper TX2 775/754/939/940/AM2

Zalman ZM850-HP 850W ATX 2.2

2x Samsung SpinPoint F1 750GB SATA-II 32MB Cache - OEM

Western Digital Raptor 74GB 10000RPM SATA 16MB Cache - OEM

I heard it's a good m/b, good reviews, few minor issues. I'll get a second 4870 and crossfire them later on. Running XP hence the 3GB ram. It won't matter if the manufactuer's are diffrent will it? There's a SATA-II version of the Raptor out there, boost the transfer rate from 1.5GB to 3GB. Do u think it would make a significant diffrence that i should opt to get that version instead? If there's anything i've missed out on or u got some advice for me plz mention! =)

@Churchill_Croc

Which outta your towers was best for space + air flow/fans? I might be getting a 9800 GX2 and i heard they need alot of room.

Yo fellow uk gamer =P

You might want to check amazon.co.uk, some parts might be a bit cheaper there. Though your websites u listed are gonna be useful since im also building a new pc. So thx for that =)