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Thread: Rampage Formula won't POST with 8Gib

  1. #1
    Splash
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    Rampage Formula won't POST with 8Gib

    Here's an odd little situation... I've just upgraded my P5B Deluxe Wifi to an Asus Rampage Formula, and thrown in a second HD4870 in Crossfire for good measure. Everything else about the system is *exactly* as it was in the P5B however I find that this board won't pass POST with all 8Gib of RAM installed.

    RAM is Corsair CM2X2048-6400C4DHX (that'd be 4 of those). I've manually set voltage in the BIOS to 2.10V, and the timings to 4-4-4-12, but the machine won't POST until I take 2 of the modules out. I've upgraded to the latest BIOS, no dice.

    Any thoughts?

  2. #2
    Anthropomorphic Personification shaithis's Avatar
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    Re: Rampage Formula won't POST with 8Gib

    Might need to bump the MCH voltage up a bit.
    Main PC: Asus Rampage IV Extreme / 3960X@4.5GHz / Antec H1200 Pro / 32GB DDR3-1866 Quad Channel / Sapphire Fury X / Areca 1680 / 850W EVGA SuperNOVA Gold 2 / Corsair 600T / 2x Dell 3007 / 4 x 250GB SSD + 2 x 80GB SSD / 4 x 1TB HDD (RAID 10) / Windows 10 Pro, Yosemite & Ubuntu
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  3. #3
    Splash
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    Re: Rampage Formula won't POST with 8Gib

    Hmm... after switching modules around a bit and bumping NB volts I got it to POST with 6Gib. I've since dropped the NB back to standard volts and it posts fine, but as soon as I put the last module in it refuses to pass "check DRAM".

    I've had the NB as high as 1.39V, I'd rather not push it any further unless absolutely necessary...

    Any other ideas? All 8 Gib worked at standard in my P5B Deluxe.

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    Re: Rampage Formula won't POST with 8Gib

    weird as I have the same Mobo as you and I have just put 8gb in mine which it was very happy to accept.

    4gb of dominator and 4gb of reeper (bros)

    Everything is at stock at the moment. I will let you know what settings I have the RAM later as I know I had to change those when I first installed windows.

  5. #5
    Splash
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    Re: Rampage Formula won't POST with 8Gib

    It seems that DIMM_B1 is guffed - have tried 8 known good memory modules in it now and it fails to POST whenevr that slot is occupied

    Gah!

  6. #6
    Senior Member manwithnoname's Avatar
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    Re: Rampage Formula won't POST with 8Gib

    Clutching at straws:
    Does the manual say the M/B will work with just ram in that socket - if so can you try that?
    there isn't dust or fluff in the ram socket?

  7. #7
    Splash
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    Re: Rampage Formula won't POST with 8Gib

    The board boots with RAM in any slot but that one, that includes if only a single module is used. I've blown the slot with a can of air, but no dice.

    Unless I'm missing anything obvious I guess I now have to decide if I can live without this rig for long enough to get it RMAd to Scan, or if I just suck it up

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    Re: Rampage Formula won't POST with 8Gib

    Quote Originally Posted by Splash View Post
    Unless I'm missing anything obvious I guess I now have to decide if I can live without this rig for long enough to get it RMAd to Scan, or if I just suck it up
    Send it back, its faulty and it may well get worse.

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