Advice upgrading my out of date PC for £300

becoming-stranger

Honorable
Jun 21, 2013
1
0
10,510
Hi all. Me and my brother are clubbing together £300 to upgrade our old PC for gaming. We can currently play games like Skyrim, ME3, Battlefield 2 and Total War series on medium to high settings but we'd like to ensure we can the next generation of games.

This is what I have at the moment:
MOBO
Gigabyte EP31-DS3L (DDR2, Socket 775)

CPU
Pentium (R) E5200 2.50GHz (2 CPU's)

GPU
ATI Radeon HD 4800 (512MB)

RAM 2x 1GB (Unknown manufacturer)

PSU
EZ Cool ATX-550 JSP (550W)

500GB Hardrive

Running Windows XP

Now I know this is pretty out of date so I was thinking the best plan of action would be to upgrade the CPU, MOBO & RAM for £300 and install Windows 7 (which I have) and then upgrade the GPU at a later date.

I am a first time builder and so was looking at Motherboard bundles rather than buying components separately, is there a large price difference for buying something like this compared to buying each component individually?
[http://www.cclonline.com/product/73623/NoMfgCode/Motherboard-Bundles/CCL-Alpha-Athena-Motherboard-Bundle/MBB-INTEL-MID/]

I'd be grateful for any advice on the best strategy for our £300, UK sites only please for components.

Thanks!