I have a 2600k in lieu of a 2500k because of recomendations here. That was an original question 4-weeks ago. However, I have a 2600k, and stuck with it, so no choice. My initial post stated that I have no intent to OC.
I'm sure the stock 2600k will out perform my 3.4 P4. I just want a stable system with the necessary number of 6Gb/s SATA's to drive the SSD and RAID1 HDD