Help please, I want to upgrade a bit and looking to find out what, if any, processor I can replace the 1.86mhz with.
cheers
There is nothing in Intel's current line that is still socket LGA775. There hasn't been for some time.
What Core 2 Duo CPUs were notorious for, is the zest to which they take to overclocking. (a possibility).
A 64 bit OS wold be mandatory for high memory usage, which sends you the bill for OS and new RAM. Your board is likely DDR2, which would be higher in price than the current DDR3 modules.
But, if you're going to have spring for an OS, RAM, and are thinking about another CPU, you might as well just build a PC.
Any of the new Core i3 xxx series CPUs probably have twice the throughput of what you're using now, coupled with 1600Mhz DDR3, which really speeds up the process
If you can save your case, all drives, and your PSU, (temporarily), the sticker shock of a new PS, wouldn't be all that bad.