I've a newly assembled rig, based on a Z77 MPower MB with an air cooled 3770K and 4 x 4Gb of LP Corsair Vengance 2133 ram.
On first boot, everything seemed OK and I was happy to see the new snazzy BIOS welcome screen. While explaining how things worked to my lad, I noticed that the XMP of the memory wasn't enabled so enabled it. The figures listed matched the ones I ordered -> 11-11-11-27 1.5V so looked good.
I saved and rebooted, but all I got was the MB cycling every 10 seconds, stopping at POST error 55.
I tried removing one set of dimms,then swapped them over, but still the same. Clearing and then setting back to AUTO (1333) had it booting normally.
I started testing the frequency manually, leaving everything else in AUTO.
I found the MB would POST fine up to 2000 but would fail at 2133.
By chance, I then had a look at the monitor function, under the Eco section, and found an odd thing with the ram voltage. At 1333 or 1400, the voltage sits around 1.46V. Any setting above 1400 displays the voltage at 1.65V!
Did I miss something but, aren't the XMP settings supposed to configure the freq, timings and voltage?
The MB bios, I believe, is sitting at V17.5.
Please let me know if I've forgotten to list something inportant and I look forward to finding out what I'm doing wrong