Fatal1ty X99M Killer possible with 128gb ram?

Im going to build a new workstation based on micro atx and probably use the  Fatal1ty X99M Killer or the Fatal1ty X99M Killer 3.1 version.Now,i coud swear i saw a while ago on the main page specifications that the board coud accept max of 128gb ram but now is changed to 64gb.

O_and_N wrote: Im going to build a new workstation based on micro atx and probably use the  Fatal1ty X99M Killer or the Fatal1ty X99M Killer 3.1 version.Now,i coud swear i saw a while ago on the main page specifications that the board coud accept max of 128gb ram but now is changed to 64gb. But,in the memorry list i do see 32gb ram stick that is certified. So the CPU is going to be a i7-6950x(as intel ARC says it can handle 128gb ram)or a e5-2690 v4. I suspect that the available 32gb ram sticks are ECC only so maybe only the xeon is compaible. Leaving all this on one side,my question is if i put 4x32gb ram on the  Fatal1ty X99M Killer will it work fine or will i get some kind of a nasty surprice(like system not stable,bottlenecking,ram not recognised by system etc)? Cheers

Sorry but I don't have any personal experience with 4 x 32GB of DDR4 memory in the boards you mentioned, or any other board. I doubt many other people do too, so knowing what would happen is impossible.

The 32GB Crucial memory in the Fatal1ty X99M Killer Memory Support List is ECC memory. They seem to be sold singly, so no need for a matched set?

Intel has a document about memory validation with the Xeon E5-2600 v3 processor family, and high capacity ECC memory. But notice the number of slots on server boards. A board with one slot per channel, and not built to server grade, will be unlikely to handle it.

http://www.intel.com/content/dam/www/public/us/en/documents/platform-memory/ddr4-rdimm-xeon-e5-v3-validation-results.pdf

Thanks guys.I will probably go with the e5 2690 v4 but will try and contact crucial and asrock holping some of them made a test.Its possible that in the end i chicken out and go with 64gb ecc or buy the 32gb one from amazon do the test, and if somethings wrong try to return it fast.

O_and_N wrote: Looks like the thing works.I wonder why it says micron.Do they fabricate the crucial sticks?

Crucial is wholly owned by Micron.

Take a gander at Crucials homepage, at the Crucial logo on the upper left corner.

http://www.crucial.com

O_and_N wrote: Note taken hehe. And now for a probably dumb question.In the image above,did they overclocked the ram?

I almost said, did you look at the picture? But if you aren't familiar with an ASRock UEFI on an X99 board, how would you know?

That's the Main screen in the UEFI, which shows, among other things, the DIMM slots populated with... uhm, DIMMs, memory sticks (I hate saying sticks), and the speed that the memory is running at.

We can see it is at 3000. The Crucial part number is CT32G4RFD4213.36FA1. We can see 2133 (oddly) included in the part number. Just to verify, just search on the part number above. One result example:

http://www.serversupply.com/products/part_search/pid_lookup.asp?pid=272137&gclid=CPPohMXNps8CFdgMgQodhkoHFQ

The standard speed of this memory is 2133. I don't think ECC server memory would have an XMP profile, but who knows.

Clearly, the memory is over clocked. It may be manually over clocked, which is no big deal to do.

What is a big deal is 128GB of ECC server memory used with a Xeon E5-2650 v4 (a Broadwell Xeon) processor being over clocked to 3000.

IMO, to expect 128GB of this memory to be able to over clock at all is...

Oh wait, we don't know what the timings are, might not be good enough.