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CML8GX3M2A1600C9 running at 1333 not 1600


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I just built a new system using a Gigabyte GA-Z77N-WIFI motherboard and Corsair Vengeance CML8GX3M2A1600C9 8GB DDR3 1600 RAM.


System went together smooth, but on boot I'm only seeing 1333 RAM speed instead of the 1600 speed.


BIOS is set to default, with the X.M.P. active. I did disable it, but the RAM remains at 1333. Any suggestions? Thanks!

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Hi snyder17315

This seem to be a Bios issue.

Wath bios ore ususing?

Last one is F3d and you could find it on this webpage.


Is XMP profile still dont worck you have to manualy set memnory spec to:

1600MHz at 9-9-9-24 with 1.5v and you have to set memory voltage up too 1.65v is it not stable.


Hope this help

Sincerly yours

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If you disable the XMP profile it will default back to 1333mhz. To confirm it's running at 1600mhz, run CPUz and look at the memory tab. It should read 800mhz. DDR is double data rate so you would take your 800mhz and double it for 1600mhz.


Please re-enable the XMP profile and test the system with memtest86+ (link is on the left) for stability.


If it fails then manually set your DIMM voltage and retest. But with just an 8gig kit you shouldn't need to make any other adjustments except to enable the XMP profile.

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