What am I missing?

[rentaspoon]

http://uk.pcpartpicker.com/p/3o6u5

So just made another list on pc parts picker for a friend, for some reason parts are cheaper.

I must be missing something? Budget is £600

Edit: just noticed the error lol

[Paralectic]

You aren't missing anything if you don't need any peripherals?

[Faceman]

http://uk.pcpartpicker.com/p/3o6u5

So just made another list on pc parts picker for a friend, for some reason parts are cheaper.

I must be missing something? Budget is £600

Edit: just noticed the error lol

Here is a similar build that should be better.  It is over the 600 budget, but your build was also, so I went with the budget of your build:

 

PCPartPicker part list: http://uk.pcpartpicker.com/p/3oeAC

Price breakdown by merchant: http://uk.pcpartpicker.com/p/3oeAC/by_merchant/

Benchmarks: http://uk.pcpartpicker.com/p/3oeAC/benchmarks/

CPU: AMD FX-6300 3.5GHz 6-Core Processor  (£79.50 @ Amazon UK)

CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler  (£25.45 @ Scan.co.uk) <-- Essential for overclocking, if budget is a concern, maybe buy this upgrade later as it is not a necessity.

Motherboard: MSI 970A-G43 ATX AM3+ Motherboard  (£47.48 @ Aria PC) <-- Less expensive and will perform just as well with all the features he will ever need

Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory  (£57.52 @ Ebuyer) <-- less expensive, and very very good RAM

Storage: Kingston SSDNow V300 Series 120GB 2.5" Solid State Disk  (£48.78 @ Aria PC) <-- He wont need more than 120GB of SSD, and this brand works just fine regardless what people say.

Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive  (£35.94 @ Aria PC)

Video Card: Gigabyte Radeon R9 290X 4GB Video Card  (£375.59 @ Aria PC) <-- GPU impacts performance more than anything else, spend as much as you can on this component.

Case: BitFenix Comrade ATX Mid Tower Case  (£28.04 @ Aria PC) <-- Case doesn't impact performance, get the least expensive case you can find

Power Supply: EVGA 600B 600W 80+ Bronze Certified ATX Power Supply  (£45.76 @ Amazon UK) <-- Your PSU was overkill, this one will perform well and costs less

Optical Drive: Asus DRW-24F1ST DVD/CD Writer  (£15.95 @ Amazon UK)

Operating System: Microsoft Windows 8.1 (OEM) (64-bit)  (£83.53 @ Amazon UK)

Wireless Network Adapter: Asus PCE-N10 802.11b/g/n PCI-Express x1 Wi-Fi Adapter  (£13.20 @ CCL Computers)

Total: £856.74

(Prices include shipping, taxes, and discounts when available.)

(Generated by PCPartPicker 2014-04-08 17:04 BST+0100)