Really? While I play games @ 4.7ghz 1.285v I usually sit between 37-50C or max 58-60C. Or up to 65-70C per core max in physics Vantage or 3dmark Skydiver physics (both the hottest tests so far), dunno nothing too hot to me @ aio H90 cooler. You must have had a really bad sample with high volts then, blame silicon lottery btw, even 2600K will get hot if you run Prime95 or Aida64 FPU.. Also dunno why this debate, I just mentioned what happens in some scenarios when its faster per core performance matters and if you're not gpu bound SandyBridge vs Haswell (500-600mhz difference), sometimes more where those extra 5 vs 7way branch buffers or extra commands like gather and vectors count (Cinebench15 gpu test) and OT obviously made his mind up. Similar faster per core performance with i5 750 vs 2600k..