Upgradin CPU - Poor mobo?

Hey, I believe I must upgrade my CPU. Here are my Specs.


G31M-ES2L LGA775
4850HD non-reference Sapphire
2x OCZ Gold XTC 2GB DDR2-800
c2d e4300

EVEREST DETAILED REPORT PLEASE READ
http://www.text-upload.com/read.php?id=38942&c=8427699

I believe I have to said that I have had some problems overclocking my CPU. It did go up to 2.8GhZ but it worked for only about a week. After that it wouldn't want to overclock at all. Now, after several months and a GPU+PSU upgrade I tried again and I oc'd it to 2GhZ, but it also worked only a while, before failing at post and resetting. Maybe I have been doing something wrong?


I play a lot of games, but I favour all-over system performance over gaming FPS. So a quad might be in place. On the other hand I've read that e8400>>>q8400 in system perf, and gaming perf.

Which CPU is the way for me?

Does my mobo even support any of these processors, or will it bottleneck?

Thanks for your replies!

 

First place I would look is at the CPU support list at Gigabyte, the maker of your board. Here is the link to version 2.3 of the board. From there, there are links to other revisions of the motherboard. The revisions of your motherboard are printed in pretty small type somewhere on the board iteself. Here is a link to get you started:
http://www.gigabyte.com/products/product-page.aspx?pid=3485#ov