If you can find it now: The P45-DS3L or the P35-DS3L were good for OCing that chip. They don't make the P35 any more, but you may be able to find it online for ~$50-55.
If budget isn't that big this is what I would get:http://www.newegg.com/Product/Product.aspx?Item=N82E16813128357
It's got a good basic set of OCing options (manual CPU/RAM voltage, manual FSB,etc) and it's only $53
Note: I didn't read through the entire manual, I just skipped ahead to the MIT section where the OCing options are listed, and it didn't display RAM timing functions, how ever, I believe these are available by pressing <F1> like on most Gigabyte boards. Linky to manual: http://asia.giga-byte.com/FileList/Manual/motherboard_manual_ga-g31m-es2l(es2c)_e.pdf
If you need OCing help, check out the P35-DS3L OCing guide available on the forum here.
Only glaring limitation I see is that it only has 2 slots for RAM. Then again, 4GB (2*2GB) is enough for an average user.