Is my build okay?

[Revoke]

Hello, I am posting my build, just to make sure it is okay or if there is something different I could change,
Thanks

intel core i5 2500k £169.99
evga geforce gtx 580 £400.41
8GB 2X4GB Mushkin Blackline DDR3 1600Mhz 1.5V Memory £58.00+£4.50
Samsung HD103SJ Spinpoint F3 1TB Hard Drive SATAII 7200 £48.49
Gigabyte GA-Z68X-UD3P-B3 ATX LGA1155 (Intel Z68(B3)) £160.23
CORSAIR SILENT TX 850W ATX GAMING POWER SUPPLY 850 WATT £95.90
Corsair H60 Hydro i3 i5 i7 AM3 CPU Water Cooler Kit £57.50
Fractal Design Define R3 ATX Computer Case Silver £84.95

LiteOn 24x Internal Sata DVD-RW DL Black DRIVE / WRITER £18.95

TOTAL:1105