Cant achieve rated memory speed

I bought 16 gb of gskill ripjaws x 2133(OC).... the highest it will run is 800 mhz DDR3 1600... my efi bios on crosshair formula V is set to 2133 and i have up'd the voltage to 1.6 and tried the nb at 2200 mhz... plz excuse my multiple threads.... ive been trying to get an answer for 2 days to no avail... any suggestions would be appreciated thanks... :pfff:

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  1. What make/model of motherboard are you using? Also, a detailed listing of all of your computer specs would help as well.

    Please clarify. BTW, running at 2133 vice 1600 will yield very little in terms of additional performance and could make your overall system more unstable. Just something to consider.

    Standing by.
  2. More importantly, what CPU are you using? You need to manually input settings to overclock the CPU properly to achieve DDR3-2133. If it is Phenom II, you would be better off running the RAM at DDR3-1866 with lower timings.

    If you have AMD FX CPU, leave NB Frequency to 10X. Set CPU Host Frequency to 229, this will automatically OC NB Frequency to 2290MHz and DRAM Frequency to DDR3-2136

    Manually input the basic DRAM timings and voltages as shown on the RAM and packaging.

    Then raise CPU-NB Voltage to stabilize the CPU memory controller. You may need to trial and error test a few times to check for the precise voltage your CPU needs for full stability. I would suggest trying 1.30V, then go up and down based on your testing.

    Here is a great guide that should give you tons of information and learning:

    http://sites.amd.com/us/Documents/AMD_FX_Performance_Tuning_Guide.pdf

    Thank you
    GSKILL SUPPORT
  3. gskill support said:
    More importantly, what CPU are you using? You need to manually input settings to overclock the CPU properly to achieve DDR3-2133. If it is Phenom II, you would be better off running the RAM at DDR3-1866 with lower timings.

    If you have AMD FX CPU, leave NB Frequency to 10X. Set CPU Host Frequency to 229, this will automatically OC NB Frequency to 2290MHz and DRAM Frequency to DDR3-2136

    Manually input the basic DRAM timings and voltages as shown on the RAM and packaging.

    Then raise CPU-NB Voltage to stabilize the CPU memory controller. You may need to trial and error test a few times to check for the precise voltage your CPU needs for full stability. I would suggest trying 1.30V, then go up and down based on your testing.

    Here is a great guide that should give you tons of information and learning:

    http://sites.amd.com/us/Documents/AMD_FX_Performance_Tuning_Guide.pdf

    Thank you
    GSKILL SUPPORT



    ________________________

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