The 6000+ Windsors max out just above 3.75 (you can get it higher but not stable) a friend has his 6400+ up on 3.8 although he has a SAPPHIRE PURE crossfire mobo so that explains the overclocking $$ im stuck with this crappy M2N4 SLI now that my M2R32 MVP fried =( and this mobo can't get Vcore over 1.35 unless i set it to auto and it won't go over 1.36 =/ so right now im only running at 3240MHz
4) 4.25 <<
6) stable with no problems
7) temp lowest=42 highest=65!!!
yeah, i use the overclocking software >> systool << for my mobo msi-k9n neo -f , the program doesn't detect my mobo and , even regarded my cpu to a athlon 64, but i can even change voltages and multipiers as well
program is free and has a stability test with error detector