This setup will get you to 3ghz if you have a ok power supply and change out of £200, someone else might suggest a better option mind so its only a guide
Intel Core 2 Duo E2160 "LGA775 Conroe" 1.80GHz (800FSB) - Retail Intel Core 2 Duo E2160 "LGA775 Conroe" 1.80GHz (800FSB) - Retail £37.99
(£44.64) £37.99
(£44.64)
GeIL 2GB (2x1GB) PC2-6400C4 800MHz Ultra Low Latency DDR2 Dual Channel Kit (GX22GB6400UDC) GeIL 2GB (2x1GB) PC2-6400C4 800MHz Ultra Low Latency DDR2 Dual Channel Kit (GX22GB6400UDC) £24.99
(£29.36) £24.99
(£29.36)
Gigabyte GA-P35-DS3L Intel P35 (Socket 775) PCI-Express DDR2 Motherboard Gigabyte GA-P35-DS3L Intel P35 (Socket 775) PCI-Express DDR2 Motherboard £55.99
(£65.79) £55.99
(£65.79)
Arctic Cooling Freezer 7 Pro CPU Cooler (Socket LGA775) Arctic Cooling Freezer 7 Pro CPU Cooler (Socket LGA775) £14.99
(£17.61) £14.99
(£17.61)
Sub Total : £133.96
Shipping cost assumes delivery to UK Mainland with:
City Link Parcel Next Day (Delivered Mon-Fri)
(This can be changed during checkout) Shipping : £8.25
VAT is being charged at 17.5% VAT : £24.89
Total : £167.10
Hope its a help, you can get quite a nice setup for a few quid these days