Thinking about an upgrade

[Deleted]

My friend has offered to buy my graphics card from me as he is in need of a new one but is short of cash. So I'm thinking about getting a new one. Was looking for recommendations on what card to choose and a decent monitor without a huge price tag.

My current build:

CPU: AMD Phenom II X4 955 Black 3.2GHz
CPU Cooler: Cooler Master Hyper TX3
Motherboard: Asus M4A87TD EVO
Memory: Corsair XMS3 8GB (2 x 4GB) DDR3-1333
Hard Drive: Samsung Spinpoint F3 1TB
Video Card: MSI GeForce GTX 460
Sound Card: Asus Xonar DS
PSU: Novatech Powerstation 600W
Operating System: Microsoft Windows 7 Professional SP1 (64-bit)
Keyboard: Razer Lycosa
Mouse: Razer Imperator
Monitor: Hanns G 17" LCD

I have around £300 to spend and was looking at a new graphics card and monitor.

For a card I was looking at:
Novatech GeForce GTX 570 (£190)
or
MSI AMD Radeon HD 7850 Twin Frozr III (£190)

For a monitor im looking for 21.5" - 23" LED, with atleast 1080p resolution (HD)

My PC is mostly used for gaming (WoW, D3, BF3, CSS, GW2) and watching movies.

[hapylol]

Something like this would suffice.

You should report back with what PSU you have to make sure it can power the new GPU.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Video Card: Asus Radeon HD 7850 2GB Video Card (£196.54 @ Scan.co.uk)
Monitor: Asus VE228H 21.5" Monitor (£109.15 @ CCL Computers)
Total: £305.69
(Prices include shipping and discounts when available.)
(Generated by PCPartPicker 2012-06-05 21:05 BST+0100)

[Deleted]

You should report back with what PSU you have to make sure it can power the new GPU.

Added to my first post, Novatech Powerstation 600W

From what I can tell the stock radeon 7850 uses 30 watts less than my current card so shouldn't be a problem.
Thanks for the monitor suggestion