The GP is slow as hell - Go for a Seagate 7200.12 instead. The XtremeAudio isn't even an X-Fi, either go for an SB Live for £2.50, or get an XtremeGamer / Music - nothing else.
Get a better PSU, and don't bother with the 902.
Unless you t3h overclock master then go for a cheaper board, too.
I would recommend an ATI 4890 instead, they are cheaper than the GTX275 and pretty much on par with it in terms of performance.
You don't really need an aftermarket/third party cooler if your not looking at overclocking.
DFI boards are brilliant for overclockers as they practically have every setting you could wish to fine tune it, if your not going to be doing this then I would recommend a Gigabyte or Asus motherboard. I would also look at getting a P45 motherboard,
As for the processor, if your mainly going to be gaming go for a dual core, not a quad core. Most games at the moment don't make use of multi-core, something like the E8500, which is an excellent gaming CPU and the same price as the Q8400 you chose. Reason being the cores in the dual are clocked higher than the quads.
If the website sells them, I would very much recommend a 640GB Western Digital Black harddrive, these things are quick, quiet and very reliable.
Memory is pretty much weighing up the numbers, but I would recommend OCZ memory, they tend to be cheap with low timings and decent frequencies, so definately check them out if the website stocks that brand.
As for the PSU, I would really recommend a more expensive one. For the parts chosen a 550W will be a safe bet. Go for a relatively cheap one, possibly Akasa or again OCZ.
The case is a good choice, maybe to save money the Coolermaster Storm Scout.
EDIT
Oh yea and as Jakg said, the sound card is a bit meh. To be honest unless your finicky with sound, on board tends to be more than good enough.
No doubt there's better DVD drives out there, but that one will do. That lot of components worked out at £675 which in euros is just under 790 Euros. I reckon that would make for a decent PC!
AMD is good for the mid range budget, nowadays. Go for a phenom II 720, 2x2gb ddr2 800, gigabyte 790x motherboard, 4890, Xigmatek aftermarket cpu cooler, and you've got yourself a great gaming computer that can OC to 3.7 on 1.5 vcore easily.
Yeah well to be honest I only specced it with the 902 becuase he mentioned it in the original post. Myself, I'd go for the Antec Sonata III Case with 500W EarthWatts PSU combo (£95 for both case & PSU), it would save a packet on the build cost and the quality is top notch.
I am always giving couple of question to a person who asking me for a recomendation or building his new system so I can offer him/her the best what suits he/she needs:
- Whats your budget?
- What will be the main purpose of using it? (games,video editing/picture editing, anything else or combination)
- How often you exchange the PC completly?
Thanks for answering so I can make some offers to you.