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RAM not running at full speed

I have an MSI Z87-G45 motherboard with 2 sticks of 8 gb ram supposedly clocked at 1866 mhz (found here on Newegg: http://www.newegg.com/Product/Product.aspx?Item=N82E16820220830), and I noticed in the BIOS that the ram was running at 1600 mhz. I tried turning on X.M.P, which recognized the memory as 1866 mhz, but when I restarted the computer it told me that the overclock had failed and it would reset to the default BIOS settings.

How can I make the RAM run at full speed?

My processor is a i5 4670 (not the K version).
5 answers Last reply Best Answer
More about ram running full speed
  1. When you enable the X.M.P settings check the voltage. Should be ~1.5 V

    Otherwise change the multiplier manually.
  2. Sh4d0w45p said:
    When you enable the X.M.P settings check the voltage. Should be ~1.5 V

    Otherwise change the multiplier manually.

    Just checked, voltage is at 1.5, and when when I change the multiplier manually I just get another crash screen and have to reset the BIOS
  3. What CPU do you have? It needs to be able to carry 1866
  4. Tradesman1 said:
    What CPU do you have? It needs to be able to carry 1866

    i5 4670
  5. Best answer
    With the VIpers, try enabling XMP, then manually change the DRAM voltage to 1.56
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