Hi Folks, I just recieved my new system but was given the i7-2600 without the K. Full Spec: i7-2600 @ 4.2GHz (overclocked)ASUS® P8Z68-VCOOLERMASTER HAF 9328GB KINGSTON HYPER-X GENESIS DUAL-DDR3 1600MHz1.5GB NVIDIA GEFORCE GTX 58080GB INTEL® 320 SERIES SSD1TB WD CAVIAR BLACK WD1002FAEXCORSAIR 750W TX750 V2 I am wondering if it is worth the hassle of sending the whole thing back for the sake of 0.6GHZ? I was hoping to be able to have it running FSX at max settings with rex etc, would there be any noticable difference had they given me the K model?