i have the same processor in a second computer that i just use for tossing old hard drives in for backup mass storage. I haven't overclocked it, but really have no need to. i believe the G41 chipset is what you can still find some motherboards for sale on Newegg. At the same time, i would suggest you read 2 articles called "Which is the faster CPU? Old High End Vs New Low end" part 1 and part 2
http://www.hardwaresecrets.com/which-is-the-faster-cpu-old-but-high-end-or-entry-level-and-new-part-1/
http://www.hardwaresecrets.com/which-is-the-faster-cpu-old-but-high-end-or-entry-level-and-new-part-2/