lebron jeems :
i am going to be building my first gaming pc soon and am look for the maximum overclock of a amd fx 8350 with an evo 212
I build and overclock FX systems for customers on a fairly regular basis. First of all, what can you expect out of a maximum overclock with the current FX line. Back before the line "matured" you could get FX 8320s that would overclock just as good as FX 8350 and it wasn't really that unusual to see 5Ghz overclocks for either one. With the process now in a very mature stage you really don't see that anymore. FX 8320s usually top out around 4.6Ghz, FX 8350s usually top out around 4.8Ghz and if you want to get to 5Ghz the FX 8370 averages 5Ghz. The big difference is the binning in the chips. The FX 8320 has the lowest binning, the FX 8350 has average binning and the FX 8370 and FX 9xxx series has AMDs very best binning.
As for heat the FX 8320 and FX 8350 are going to produce a lot of heat. The FX 8370 is still a hot processor, but overall (due to binning and tweaks requires less voltage and therefore produces less heat). On a Hyper 212 EVO and FX 8350 your going to be topping off your overclock around the 4.2 - 4.5Ghz range at best (with dual fan push / pull configuration). If you want better overclocks from the FX 8350 you need to go to extreme air cooling (ex: NH-D15) or a good closed loop water cooler (ex: H100i GTX), realistically you will hit the maximum overclock with either of these coolers as current FX 8350s rarely are able to overclock much past 4.8Ghz. If you want a processor that is going to almost always get to the 5Ghz+ range your looking at the FX 8370 and again you will need really good cooling.
To achieve the best overclocks you also need a tier 1 psu at least 80+ Gold, high end 990 motherboard with plenty of VRM cooling and at least 8+2 power phase and you will also need the cooling (on air NH-D15 or equal and on water at least H100i GTX or equal).