That motherboard(AM3 variant) was hardly any good at overclocking Phenom-IIs. So let me put it this way, if overclocking IS NOT your goal then cheap out on the board and drop a 6300 on it. If you plan to overclock quit being cheap and buy a decent motherboard.
There are 2 things critical to a performance PC's success which should NEVER be cheapened out on: 1 PSU never ever ever build a performance PC with a cheap PSU because when(not if) it fails its going to take other components with it, 2 motherboard everything in the system is connected to it, and if it cant hold its own the rest of your parts may as well be cheap junk.
Look I have an 8120 sitting on an Asus M5A78 it has basically the same VRM and chipset as that gigabyte board, is this ok? not particularly. Why then am I doing it? Because the board was cheap and I wanted to get a quadcore, but instead my left over 8120 got installed, and I have to run the CPU BELOW stock speed so the board wont overload, and that's after I added a heatsink AND fan to the VRM, added a fan to the northbridge, and liquid cooled the CPU. So is it worth it to put a good CPU on a cheap motherboard? Absolutely not I cant even get the FX to run stock with turbo off let alone do something worthwhile. So now I am the proud owner of a piece of trash motherboard that with any luck Ill find a very very low end chip for cheap to drop into it so I can donate it to a family member, because lord only knows its not doing my wife's high end liquid cooled gaming PC worth a damn.
So is the UD3 worth twice as much as that 770 based board???