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G.Skill 1866MHz RAM registering as 1600MHz.

Last response: in Memory
December 29, 2011 2:34:45 AM

Hey everyone,

Recently I built a new PC and included two sets of: G.Skill RipJawsZ 16GB (4x4GB) DDR3 PC3-14900C9 1866MHz.

However on AIDA64 each DIMM shows as: G Skill F3-14900CL9-4GBZL 4GB DDR3-1600 and in BIOS the target DRAM speed is 1600MHz as well while the ‘Memory Frequency’ setting is set to AUTO . I tried setting this to 1866MHz but I receive an ‘Overclocking failed’ message and I’m forced to reset it to AUTO.

Also in CPU-Z under the Memory tab DRAM frequency is registered as 800.5MHz, other PC components are:
ASUS Rampage IV Extreme
Core i7-3630K CPU
GTX 570 SLi

Why am I not achieving 1866MHz with is RAM, is there something I need to enable on the motherboard?


Best solution

a b } Memory
December 29, 2011 2:42:43 AM

You need to enable the XMP profile in your system BIOS. It is usually found in the memory timing section of settings.
December 29, 2011 3:02:44 AM

Ahh brilliant! Sorry for the beginner question but thanks very much for the quick help!
December 29, 2011 3:02:54 AM

Best answer selected by battousaik.