Wow... That looks ALOT like my build except I got a q9550 instead of the i7, some different RAM and a HAF 932 case. Looks good to me, the noctua cooler is veeeeerrryyy underrated and has top of the line cooling. the only things i can really say are go with a full tower case and the corsair650W (or even 550W) will be enough to power your comp. Not 100% but Ive heard asus isnt the greatest brand for motherboards, a gigabyte board would do you better. overall it really dosent need any drastic changes.
I dont think i need a full tower case.
A. There too big and will have to go on floor. This will just add to the dust collection.
B. I am not going to use even 3 HD/CD drives. 1HD 1 dvd/rw(Then at a later stage get a blu-ray burner
I think for the price and size the antec 900 is just what i am looking for it was close, either that or the cm 690. But the 690 hasnt got a clear side panel and i know you can buy one but whats the point for another £20. And the antec is slightly cooler, underload.
Antec 300 isnt a bad case either just too small, dont like the exterior design
The next level of GPU would be the 4890 or GTX275 which are around 250$ and arent that much faster than your 4870. I recommended the full tower case cause it keeps everything cool HD, GPU, MOBO, RAM, and PSU making components last longer but the 900 is a good case, the 690 is not as good (especially not in looks) but with your build I would go with the 900.
This is a good Gigabyte board
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128375 Your ASUS board is good its just the ASUS's quality hasnt been the best lately, well thats what Ive been hearing.
A full tower case is no necessity, but an NZXT Tempest is much better. I can also see you're buying from Aria. You'd probably get a better deal from Scan, but you wouldn't be able to buy the NZXT case from there. For reference, the Tempest does have dust filters. The 900 is also terribly designed. I owned one for a period but sold it as the number of problems with it made it a pain to use. The front mesh & cage design for the hard disks in particular is very poor.
The 750W PSU is a little overkill, you would do fine with a 650W unit with that setup unless you went Crossfire.
Agreed on the Asus board, a Gigabyte would be better.
Hmm, im not sure. Well i'll have to buy it from a seperate company scan nor Aria sell it, which adds to more shipping costs. Any other good midi cases around the £80. How about the CM storm scout?
The Tempest is unfortunately quite a rare case in the UK, the Scout is a perfectly acceptable compromise really, both are much better than an Antec 900.
As for those specs, they pretty much all do except the UD3 series. The UD4 will do fine.