08-04-2016 01:42 PM - last edited 3 weeks ago by ROGBot
08-04-2016 06:37 PM
08-04-2016 07:08 PM
MeanMachine wrote:
Hi Erorr 🙂
64MB at 3200Mhz is a lot to ask of the IMC on your CPU and may not be able to handle it.
Does the system run OK with just 32MB installed.?
08-04-2016 07:12 PM
Erorr wrote:
I can't even boot with a single 16Gb module 😞
Well it ran perfect for a day until I set it to XMP.
08-04-2016 07:21 PM
Onimax wrote:
Oh I might have misunderstood you there, my bad.
I thought you were able to boot the machine at stock (2133) speeds.
Please clear your CMOS again, maybe switch to the other EFI and only try one stick - if it still does not boot try another stick and/or move the stick to a different DIMM socket (see the manual which sockets are viable with only one stick!).
If you get it to boot from there, proceed as I posted, if you can't get it to boot you could also try reseating your CPU - sometimes that helps.
08-04-2016 06:49 PM
08-04-2016 07:15 PM
MeanMachine wrote:
Hi Erorr 🙂
64MB at 3200Mhz is a lot to ask of the IMC on your CPU and may not be able to handle it.
Does the system run OK with just 32MB installed.?
Onimax wrote:
3200 might be a little bit too much for Broadwell-E. (At least that's what I encountered)
Like MeanMachine said, your IMC might not be the best.
Try setting the speed manually - I'd recommend max. 3000 with a 6950X.
Also you might need to tune your VCCSA a little bit.
Also: Don't expect XMP to work plug'n'play just because you can select it. To my experience you almost always have to tinker around manually with XMP-profiles on X99 - maybe the marketing is a bit misleading there...
Hope that helps.
08-04-2016 07:23 PM
08-04-2016 07:40 PM
Onimax wrote:
64GB will definetely work, I have a 128GB Kit running atm, the question is just at what speeds.
The moment you select XMP your system is basically running a RAM overclock, that's why you are not guaranteed that it'll work out of the box.
All that is guaranteed to work out of the box is 2133Mhz for Haswell-E and 2400Mhz for Broadwell-E, anything above that solely depend on your particular CPU's MC.
Getting the RAM to work on higher speed though is not that difficult, you just need to have some patience to tinker with some settings.
Basically it's just increasing the Speed, rising VCSSA and/or loosen the timings a little bit in small steps until you are satisfied with the result. 😉
Edit: Did you also try the other EFI chip?
Edit again: Did you check that the DIMM control LEDs light up accordingly? (right next to the QCODE LED) Also what QCODE do you get?
08-05-2016 01:55 AM