I have a UCS C240 M3S that is operating the memory at a lower speed than I think it should. It has dual E5-2660 v2 @ 2.20GHz CPU's, and is running BIOS version C240M220.127.116.11a.0. It is fully populated with 4GB DIMM's, and all though DIMM's show a channel speed of 1333 in the memory section of the server inventory. The memory operating speed shows 1066. I have another server (C220 M3) running the same BIOS version C220M18.104.22.168a.0 with dual E5-2670 0 @ 2.60GHz CPU's, and it fully populated with 8GB DIMM's that show a channel speed of 1333, but it shows an operating speed of 1333. What gives? I have stared at all the BIOS options around memory, but I can't see anything that would cause it to chose a slower operating speed.