I got two builds both with i7-3930K CPU and 32 GB Ram G.SKill, Noctua nh-d14 cooler 1) -P9X79 WS mainboard - corsair obsidian 550 D case - evga GTX 680 FTW 4GB 2) -rampage Gene IV -fractal ARC MINI case - evga 610 Number one is my workstation number two is render farm so it doesn't have good GPU. I OC'ed both to 4.6 GHz with 1.325 V ,using settings form this official ASUS video: [VIDEO]https://www.youtube.com/watch?v=Kx2z07sFM2I[/VIDEO] After running AIDA64 on both builds I'm getting temperature differences. Build 1 is running around 73 (hit even 76 sometimes) C in full load while build 2 is 68 C. The strangest thing is the temp jumping difference on build one it's much wider spread: Is it possible that because of more heat inside the case of 1 because of 680 GPU can cause this difference? Or rampage got better power control over the CPU ? Or simply CPUs have different quality and this is causing this or I badly applied thermal compound on build 1 ?