not my cpu, but my buddy called me after he got his prebuilt fx6300 system, so i came over and helped him overclock. He paid too much for the system but it had a solid mb (ga-990a-ud5) an alright psu (xfx-600W) and a corsair h80i. so i figured we'd see how good his fx was and we started out just increasing the multiplier and loading into windows.
4.5, 4.6, 4.7 i was a little weirded out, no vcore bump yet, so we ran prime95... passed with flying colors on stock voltage at 4.7ghz... at that point i looked at him and said "we gotta go for it, you just won the lottery" so we strapped in and enjoyed the ride. it started to need vcore to load into windows at 5.2ghz, we hit a prime stable overclock at 5.6ghz and i think it was 1.4625 (?) vcore... ended up bowing out at that point as we could get it to load into windows up to 5.8, but we couldn't get it stable there... and at 5.7 we needed something stupid like 1.55vcore, and the temps were nuts
so... a day to day 5.6ghz, 1.4625V vcore with a 55C prime95 temp (not sure on that temp, the cpu doesn't report the temps right, going on a best guess from the socket temp reported by the mb) on a corsair h80i with a ga-990fxa-ud5 mb. About as good an fx 6300 as i've seen. (a friend of a friend of mine has an 8320 he got to 5.5ghz stable on air, probably could get it further on a custom water loop, i know he could get it to load into windows at 5.7)
but yeah... even not having an fx or even working with many (grand total of 3) i could tell that chip was special. Great overclocking little monster. I don't know if it was pre-binned by fry's or not. i don't think they do that, so he might have just won the lottery with it. i've been meaning to look into if fry's bins their chips they use in their custom systems ever since i saw that little baby. Cause it's a one in a hundred... maybe a one in a thousand.