Ok, technically i need pc build under £850 but i have around 40 left what should i spend it on??
RED AND BLACK THEME PLZ http://uk.pcpartpicker.com/p/Pn6BD8
Yes uguv is right , I overlooked that, a SSD drive is the best upgrade and in most peoples mind near essential , windows will feel 100x faster, Games will load faster + a normal HDD will slow down over time
upgraded RAM might help, but this rig won't be overclocked (can't be) so a cpu cooler is unnecessary. An SSD drive would make a little difference as a boot drive (and I do recommend every computer have one, that way it's easier to fix, than to deal with boot partition on the main HDD.
A nicer case, maybe buy a few less fans, and get a prettier case and the SSD. Of course you might like the case you selected well enough, and you'd be within your giths to tell me my taste is only in my mouth