Running the exact same CPU (also unlocked running at 3.6GHz) on a Gigabyte GA-ma770-ud3. I upgraded to a 2600k a few years ago but have this for a dedicated Linux machine.
Still a great little CPU although I don't really put it under much load these days. That is what the 2600k is for.
Was running a x4 version up to about a month ago in one of our older workstations, worked great until the PSU went out of spec and fried the MB, it's now sporting a 6300 with a new 990fx board and PSU... should be good for a few years. lol
My old rig (Now the wife's rig) is running a Phenom II 965 at stock 3.4Ghz. It's fine for her, though right now there's two games it struggles with, BF4 and GTAV, BF4 is a bit sluggish, frame time variance issues, but very playable, avg maybe 65fps, and GTAV just runs badly in the middle of the city. Otherwise everything she does is fine, though she's not as sensitive to low frame rates like I am and probably you fella's as well. She's running a GTX 760 ACX 2GB, great little card.
We're building new rigs in late September or so, not sure what I'll do with the box yet, probably a media server.
I give my dad my old rig that was still running a Phenom II 965 @4ghz and a xfx 7950 about 2-3 years ago when his dinosaur del melted its self. Its still running fine he only plays call of duty 4 and some sim games on it primarily he uses it for his signwriting running a plotter to cut vinyl lettering.
I'm currently running a Phenom II 550 non BE that I had overclocked to 4GHz. Tried unlocking it, but produces artifacts when encoding video and makes the audio crackly.
I just upgraded from a Phenom II X4 955 this year, had no problems with it with 1440p games at max graphics. I would probably still be using it if not for the cheap sale for FX's at microcenter. The phenom is now our living room htpc / streamer.