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Ram overclocking on the Crosshair V Formula

Discussion in 'Motherboards & Memory' started by Sempron Guy, Sep 5, 2013.

  1. Sempron Guy

    Sempron Guy

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    Currently I'm at 1880mhz with 10-11-10-30-41 timings at 1.75v( voltage not yet tweaked). My mems are the Avexir Core Series DDR3 1600 c9. Is there any other setting I need to change aside from the voltage ram and the vddr? Using the mem. divider of 2133 gets me at DDR3 2190 ( i had oc'ed my fsb as well ). I can't get it to boot regardless of loosened timings ( highest I tried is cl12 ) and voltage( highest I tried is 1.85v ).
  2. Sempron Guy

    Sempron Guy

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    [​IMG]

    here's what I got so far. Anything above that even with loose timings and/or higher voltage I got a no boot.
  3. cdawall where the hell are my stars

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    Any idea on what modules you have on your ram? Also have you tried bumping the NB volts a bit along with timings such as 10-12-12?
    Sempron Guy says thanks.
  4. d1nky

    d1nky

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    what cdawall said, cpunb probably needs a bump.

    and when stress testing with tweaked ram I find the cpu needs a bit more.

    you may have to loosen some of the other timings, I know my ram wont boot with the latency at below 160ns and higher ram speeds wants 240ns and more
    Sempron Guy says thanks.
  5. Sempron Guy

    Sempron Guy

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    nope and looking at reviews they didn't bother taking of the heatsink and looking at the chips either. You mean the cpu-nb volts? Already had it at 1.4v. You think I should bump it even more and try 2133 again?

    Forgive my lack of intuition when it comes to tweaking timings :eek: what other timings would that be?
  6. d1nky

    d1nky

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    this is what gets me high speeds, 2550mhz (forget the CR and TRFC)

    [​IMG]



    1.4v is fine for 2.6ghz on cpunb

    main ones are command rate on 2 and latency performance/refresh rate 240ns and higher.
    Sempron Guy says thanks.
  7. Sempron Guy

    Sempron Guy

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    so I tried loosening the tRFC to as high as 350ns ( default was 300ns ). Tried cl12 with a command rate of 2t. Bumped the cpu-nb to 1.45. Still no boot at 2133.

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