I'd just like to thank everyone who gave their opinions on parts for my next PC. So now I have worked out what it will consist of, I'd greatly appreciate some opinions - i.e. Is it any good for gaming?
This is what, in the near future, it will look like:
Case: CM Storm Scout with 140mm Front fan (Intake), 2x 120mm Side Fans (Intake), 1x 120mm Rear Fan (Exhaust) and 1x 140mm Top Fan (Exhaust).
Motherboard: Gigabyte GA-970A-DS3 AM3+ ATX
CPU: AMD Phenom II AM3 970BE @ 4.00GHZ (With Arctic Freezer Pro 7 Rev. 2
RAM: 8GB (2x4GB) Kingston HyperX Genesis Grey 1600MHZ
GPU: Sapphire HD7850 OC Edition 2GB GDDR5
HDD: Seagate SATA-III 6GBPS 500GB HDD 7200RPM
Optical Drive: Samsung 22x DVD+/_RW Drive
PSU: XFX Core Edition XXX 850W (Overkill I know, but it was on offer at £60 last year with 5 year warranty)
OS: Windows 8 Professional (Only because a friend works for Microsoft and can get me a copy for £25)
This looks good to me. I'd consider stepping up to a GTX660 though - it's near enough the same price but it's faster and will give you PhysX and more importantly, adaptive v-sync. With adaptive v-sync, your framerate will only be held at the monitor's refresh rate (typically 60). Drop below 60 and standard v-sync would severely limit your framerates further, while adaptive v-sync disables itself when not needed so you can enjoy unrestricted framerates. It's what v-sync always should have been!