if its the kingston genesis grey mine runs at 1333 (2x2) seems ok ram, ive changed it to 1600 but never changes in cpu-z or msi control centre.
Are you using the latest release of CPUz?
Also are you remembering to 'save' and exit after you changed the setings in the BIOS?
Additional: How are you changing the settings in the BIOS - manually or using the XMP?
EDIT: i've actually just replied to your question in anther post - i'll cut and paste it here:
For simplicity enable the XMP and then manually set the volatage (DRAM) that's required - if it's a Sandybridge setup it should ideally be under 1.58V if your clocking (try 1.5V first and then test for stability via memtest/prime 95 and general use).
part number 9905403-185-A00LF
JEDEC ~2 JEDEC3 JEDEC4 XMP-1600
533 MHZ 609 MHZ 685 MHZ 800 MHZ
CAS 7.0 8.0 9.0 9.0
RAS to CAS 7 8 9 9
RAS PRECHARGE 7 8 9 9
TRAS 20 22 25 27
TRC 27 30 34 36
VOLTAGE 1.50v 1.50v 1.50v 1.650v
http://imageshack.us/photo/my-images/101/cpuzi.jpg/
dont know if ive posted the link correct but thats the cpu-z screenie
what would be the best timmings to put in Plec and many thanks for your help![]()
slot 1 and 2
They should be in slots 1 and 3 for dual channel mode.