this is what I have so far for my new system. just looking for advice to see if everything's OK. i'm missing a few parts like the psu, processor (waiting to see if ivybridge is any good), cpu cooler, extra case fans etc. if anyone could help me fill in the blanks that would be much appreciated 
YOUR BASKET
1 x EVGA GeForce GTX 680 2048MB GDDR5 PCI-Express Graphics Card (02G-P4-2680-KR) £429.95
1 x Gigabyte Z77X-UD3H Intel Z77 (Socket 1155) DDR3 Motherboard £134.99
1 x Crucial RealSSD M4 128GB 2.5" SATA 6Gb/s Solid State Hard Drive (CT128M4SSD2) £119.99
1 x Corsair Obsidian 550D Quiet Midi Tower Case - Black £109.99
1 x Corsair Vengeance Low Profile 8GB (2x4GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit (CML8GX3M2A1600C9) £39.95
Total : £851.36 (includes shipping : £13.75).

YOUR BASKET
1 x EVGA GeForce GTX 680 2048MB GDDR5 PCI-Express Graphics Card (02G-P4-2680-KR) £429.95
1 x Gigabyte Z77X-UD3H Intel Z77 (Socket 1155) DDR3 Motherboard £134.99
1 x Crucial RealSSD M4 128GB 2.5" SATA 6Gb/s Solid State Hard Drive (CT128M4SSD2) £119.99
1 x Corsair Obsidian 550D Quiet Midi Tower Case - Black £109.99
1 x Corsair Vengeance Low Profile 8GB (2x4GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit (CML8GX3M2A1600C9) £39.95
Total : £851.36 (includes shipping : £13.75).