[Cleggy999]

So, I have had this computer for 3 years, it has been good but obviously games get better and computer must feed there needs.
I had a:
CPU: AMD Athlon 64x2 4200+ 2.2GHz Dual core - + Heat sink that covers it is damaged -Absolutely terrible. xD
RAM: 2GB DDR2 Elixer (2GBX1)
GPU: GeForce 9500GT 1028MB
Mobo: Asus M2N4-SLI
HDD: 149GB SATA-II - Max. Internal Data Rate 1460 Mbit/s - Rot. 7200 RPM
Case: XBlade White + Blue LEDS - Terrible condition, Cracks and scratches missing parts. Don't ask...
PSU: 350 - 450W - Can't remember sorry.

So, I am upgrading this build with:
CPU: Xenon Intel Pentium G620 2.6GHz Dual Core
RAM: 4GB DDR3 Crosair (4GBX1)
GPU: Staying the same until 5th September 2013, Please leave suggestions with budget of £100-£150.
Mobo: POSSIBLY the Asus P8H61-MX Intel H61 (Socket 1155) DDR3 Motherboard or
HDD: Staying the same.
Case: BitFenix Shinobi White/Black or Blue
PSU: Staying the same.

Do you think this is reasonable for 1 or 2 years? I am looking for an Intel Quad core after this with 8GB ram, and a new HDD.

Games I play:
C:SS
RS
Silkroad
Garry's Mod
COD5
COD4
Minecraft

So, leave your suggestions please!

[Oddba11]

I don't know how much real performance difference you will see as the new cpu is also a dual core. For RAM, you are better off using 2 sticks instead of 4, especially for only 4GB.

You should investigate your PSU. A quality unit is more important than the size, but the size of the current unit is no the small side.