Hey. It's a HIPER Psu, one of the modular ones, about 600w. Monitor is a 17", and games are primarily RPG's like the new Empire game. Budget wise I was really wanting to keep the upgrade to under £350. Excuse my ignorance, what's the difference between the dual core 2160 and the Core 2 Duo processor?
That's good, Hiper make some quality PSUs (Americans: they are a British brand only sold in Europe at the moment)
You can do a lot with £350. Unless you are going to consider overclocking, I would upgrade the CPU and video card, maybe the RAM.
The difference between the E2xxx series and the C2Ds is that the E2xxxs have only 1MB of L2 cache and operate at much lower frequencies. The reason I said "unless you are going to consider OC'ing earlier" is because the E2160 is a fantastic OC'er. It runs at 2GHz> but has the potential to operate at the frequencies of the C2Ds.
Your motherboard has a PCI-E slot so you'll not be limited in your choice. Because you only have a 17" panel, a 9800GT
or an HD 4830
would be fine for you. Your PSU would handle it fine. http://www.scan.co.uk/Products/512MB...xDL-DVI-I-HDTV