Just a general question, what sort of specs am I looking at for £650?
You really have given us little to work with. Is that £650 with a monitor, with a mouse, with a keyboard, with a computer case, with a power supply? Do you already have an operating system? A hard drive disk?
I will assume you have all input/output devices (monitor, mouse, keyboard and sound output, CD and DVD disk drives) and OS. Then with £650 you can get yourself a future proof top of the range PC.
Let me give you an example. You can go with AMD and get cheaper (lets be honest, slightly less performance which isn't really noticeable to the average gamer) parts, or go with Intel and have top quality products that will come at a considerably higher price compared to AMD's same product range but at cheaper prices.
I am going to roughly say what £650 could get you in terms of Motherboard, CPU, GPU, RAM, PSU and perhaps a HDD/SSD. Oh and a nice case to put it all in:
Motherboard: Asus M4A88TD-V EVO/USB3 880G Socket AM3 ATX Form Factor £76.22
CPU: AMD Phenom II X6 1055T 2.8GHz Socket AM3 £131.78
GPU: Sapphire HD 6870 1GB GDDR5 PCI-E £163.58
RAM: Corsair 8GB (2x4GB) DDR3 1600MHz CL9 (9-9-9-24) 1.65V £97.77
PSU: Coolermaster Silent Pro Gold 700W Modular £99.99
HDD: Samsung HD103SJ Spinpoint F3 1TB Hard Drive SATAII 7200rpm 32MB Cache £37.98
SSD: OCZ 60GB Vertex 2E SSD 2.5" SATA-II Read = 285MB/s, Write = 275MB/s 50,000 IOPS £92.82
Case: Antec One Hundred 100 Case £41.34
All that is £741.48. Take away the SSD and it comes to £642.66.
But personally I would get something that costs less but would probably achieve the same goal. High quality game play for years to come:
Motherboard: Asus M4A87TD/USB3 870 Socket AM3 8 Channel Audio ATX Form Factor £68.25
CPU: AMD Phenom II X4 965 Black Edition 3.4GHz Socket AM3 £118.65
GPU: Sapphire HD 6870 1GB GDDR5 PCI-E £163.58
RAM: G-Skill 4GB (2x2GB) DDR3 1600MHz Ripjaws Memory Kit CL7(7-8-7-24) 1.6V £45.27
HDD: Samsung HD103SJ Spinpoint F3 1TB Hard Drive SATAII 7200rpm 32MB Cache £37.98
SSD: OCZ 60GB Vertex 2E SSD 2.5" SATA-II Read = 285MB/s, Write = 275MB/s 50,000 IOPS £92.82
Case + PSU: CM Storm Scout + Coolermaster Silent Pro 700W Modular £129.99
Bugger...That actually comes to more at £656.54. Take away the SSD and HDD however and it comes to £519.74.
A good system nonetheless.
Anyway, I would still wait until November, possibly even after next console cycle till I fully upgrade. I might get a 6870 for my current system, but that would be about it. Still on a Athlon II and DDR2 RAM and still going strong.