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Gigabyte GA-P55M-UD2: Bios sees 1600 mhz RAM as 1333

The RAM I'm using is CORSAIR XMS3 4GB :

http://www.newegg.com/Product/Product.aspx?Item=N82E16820145260&cm_re=corsair_xmp_4gb-_-20-145-260-_-Product

Any idea why my mobo is running it at 1333 instead of 1600, how do I fix this?
5 answers Last reply Best Answer
More about gigabyte p55m bios sees 1600 1333
  1. go into bios and manually set the speed to DDR3 1600, make sure you set the voltage and timings right
  2. I actually used the secondary profile in the BIOS and it reads the memory correctly. MIT -> XMP -> Profile1

    The unfortunate side effect is that is also changes the CPU frequency of my i7-860 from 2.8GHz to 2.93, according to the Intel turbo boost gadget in windows 7, and then there's the +3-5C degrees on the idle temp.
  3. Best answer
    trale said:
    The RAM I'm using is CORSAIR XMS3 4GB :

    http://www.newegg.com/Product/Product.aspx?Item=N82E16820145260&cm_re=corsair_xmp_4gb-_-20-145-260-_-Product

    Any idea why my mobo is running it at 1333 instead of 1600, how do I fix this?

    That motherboard doesn't support 1600 by default.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16813128405
    Memory Standard DDR3 2200/1333/1066/800

    So it's downclocking the RAM to a supported speed of 1333. To get 1600, you 'll need to follow Mindless's directions.
  4. I was going to post a warning about turning on XMP while using this board, how you can lose Turbo boost and idle downclocking features if you don't change anything else. Then I discovered I'd already written to you in your other thread.

    Anyone else who stumbles in here looking for advice on working with RAM settings for the GA-P55M-UD2 (possibly all Gigabyte P55's) may be interested in that thread: http://www.tomshardware.com/forum/265920-30-enabling-affect-anything
  5. ekoostik said:
    I was going to post a warning about turning on XMP while using this board, how you can lose Turbo boost and idle downclocking features if you don't change anything else. Then I discovered I'd already written to you in your other thread.

    Anyone else who stumbles in here looking for advice on working with RAM settings for the GA-P55M-UD2 (possibly all Gigabyte P55's) may be interested in that thread: http://www.tomshardware.com/forum/265920-30-enabling-affect-anything


    Oh yes, I implemented your solution, and everything's working as it should now. Much appreciated!
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