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Thread: Incompatability: Corsair XMS3 CMX4GX3M2A1600C7 and P55A UD4?




  1. #61
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    Default Re: Incompatability: Corsair XMS3 CMX4GX3M2A1600C7 and P55A UD4?

    Awesome, so now I wait for a new bios.

  2. #62
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    Default Re: Incompatability: Corsair XMS3 CMX4GX3M2A1600C7 and P55A UD4?

    Maybe.....

    According to their reply, they can't replicate the problem. Maybe the people LSD is in contact with are different and will hopefully be able to experience the issue for themselves.

    I'm going to install the set tonight, leave the PC off then boot strait to Memtest86+ tomorrow morning (Saturday). That way I'll have photographic proof for them.

    By the way, if anyone's interested, along with that response they also sent two pictures, one of the RAM installed in the board with the labels visible and another of a 5 hour run of Memtest with zero errors.
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  3. #63
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    Default Re: Incompatability: Corsair XMS3 CMX4GX3M2A1600C7 and P55A UD4?

    I'd assume they are the same people testing, but I haven't heard back on my end again yet.

    Have you guys tested one stick at a time for cold boot issues, maybe it's just one stick that is faulty in some way causing the issue?

    I never did Memtest86+ when I noted the issue, so not sure if that is a valid way to test for these issues?

    I assume it probably is though, I'll have to test and see. What they need to try is booting to windows from a cold boot and see if that fails or not, just to be sure they are reproducing what we've been discussing.

  4. #64
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    Default Re: Incompatability: Corsair XMS3 CMX4GX3M2A1600C7 and P55A UD4?

    At stock and with XMP (DDR-1600 7-8-7-20) Memtest is OK from a cold boot, but LinX fails. I'll re-test over night but I'm 90% sure Memtest when at 191x21 and DDR 1528 gives a fail.

    I've not tried cold booting with a single stick. Not sure what the outcome would be, maybe the issue would even stop. I remember you saying that at triple channel your sticks are a right old car crash, so maybe the problem gets worse as paralel channels are added? I can give it a go, but it'll be a few days because I only have this machine up at the moment.

    Agreed, Should I mail them and ask them to try an 8 hour cold boot right into Windows and get them to run a 3 pass of LinX?

    Like we all know, hardware testing can be complicated. I was thinking it could be the multipliers I'm using. I vaguely remember several issues with some Gigabyte P55A boards and the 8x RAM multi. However, we also all know what the internet is like. People only tend to post feedback when they have a problem, so that could just be a very minority of people having fluke trouble with the 8x multiplier, meaning 99.99% of people have zero issues, even with an OC.

    If Gigabyte can't get to the bootom of things I think my first call will be to kindly ask Corsair if they will do an RMA. I'll link to this thread and explain and hopefully RAM-Guy(s?-- I'm sur it's not just one person using that username :) ) will agree.

    If it's the same people testing, it's nice to see some good internal communication and that they "took over" my support message. I like that, even if the first message was less than useful. Gigabyte support sure has improved since I last had to use it (~1999).
    Coolermaster CM 690 II advance Case
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    Noctua 1300RPM 19dB case fan (rear extraction)
    3 x 140 MM Coolermaster LED fans (one front intake, one top extraction, one side intake)
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  5. #65
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    Default Re: Incompatability: Corsair XMS3 CMX4GX3M2A1600C7 and P55A UD4?

    That's what kinda concerned me, I was not even using memtest but rather going on failed boots into windows as a clear sign there is problems.

    Yes, please test cold boot with each stick one at a time, into windows if that is where you could easily see a problem. I know that is how I noticed the issue, unable to boot into windows with BSOD within a few seconds of hitting the desktop, if it even made it there.

    Ya, that sounds good, ask them to boot into windows cold and then if they can even load LinX 3 tests should be good.

    I haven't played much with my P55, but I haven't noticed any issues with any random multi's though, but I've also not had a chance to try this kind of memory on it either.

    I'd see if they will RMA for you, and if so possibly another model if they can't get this resolved via BIOS updates.

    I do think it is the same people getting back to you at Gigabyte, at least the guys testing that is as, then they would update my contact with results and he'd let me know. I'm sure he's just been busy, or didn't reply to me directly yet because he saw that they had already got back to you directly with testing results.

    They do have great support and customer relations for sure, I've only seen good things 99.9% of the time!

  6. #66
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    Default Re: Incompatability: Corsair XMS3 CMX4GX3M2A1600C7 and P55A UD4?

    For me one stick is absolutely fine, running them as a pair, no matter the timings or volts, it fails to run memtest or cold boot and pass anything. :(

  7. #67
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    Default Re: Incompatability: Corsair XMS3 CMX4GX3M2A1600C7 and P55A UD4?

    Thanks Chad, is that one stick meaning both tested separately at cold boots as well (4-8 hours down time)?

    Maybe there is some issue with certain batches of these chips then possibly? But since your heat spreaders are glued on that isn't something you guys can check into.

  8. #68
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    Default Re: Incompatability: Corsair XMS3 CMX4GX3M2A1600C7 and P55A UD4?

    I can run both sticks by themselves in almost any configuration (timings and BCLK), and yes the single channel will boot in the AM, but the dual channel fails after both sticks pass and on cold boots. When I add the second stick is where things loose stability.

  9. #69
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    Default Re: Incompatability: Corsair XMS3 CMX4GX3M2A1600C7 and P55A UD4?

    Ahh ok, thanks for the added info.

    Psycho, can you test single sticks one at a time for cold boot issues? Thanks.

    I got word back on my end, and they said maybe your kits were not programmed correctly? Meaning XMP programming or otherwise I assume.

    And they said they are also still testing as well.

  10. #70
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    Default Re: Incompatability: Corsair XMS3 CMX4GX3M2A1600C7 and P55A UD4?

    I have been wondering about the SPD. I noticed that when i do a CMOS reset and i set the XMP, then return to bios there are no timings in the left colum and the right is set to auto as usual. If I boot my Tridents or my Patriots, they have timings listed. Maybe that is the answer.

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