X399 TR + 64GB ECC UDIMM Memory

Hello 

Edited by sfchun - 28 Aug 2017 at 9:45am

The need for ECC memory for use at home is far FAR overrated.

sfcchun, here is a post about Ryzen using ECC memory:

http://forum.asrock.com/forum_posts.asp?TID=5595&KW=ecc&PID=32901&title=ryzen-1700-on-taichi-x370-no-oc-random-hard-lock#32901

I had to post the URL this way since it contains a question mark (?) and for some reason the forum changes it and it does not work anymore.  Ryzen is new and Threadripper is even newer and the vendors have not done their testing.  I would contact a vendor (my favorite is G.Skill) and make sure if the memory you buy can be RMAed/refunded if it will not work.  They should be able to find a kit that is what you want with timings close to a qualified one.  Their FlareX is made especially for AMD.  Here is their latest announcement: 32GB and 128GB
No question mark in this URL.  Enjoy, John.

sfchun, sorry my reply was not what you expected.  It seemed to me that several were wondering if Ryzen/Threadripper supported ECC.  I was pointing out that users were using ECC memory.  Threadripper is to some extent two Ryzen chips in the same package.  I assume the memory controllers are very similar if not the same.  The main point I was making was to contact a vendor technical support for a recommendation.  I did this before Ryzen shipped to select the memory for my build.  Good luck and enjoy, John.

sfchun wrote: Ok I was not clear. Yes I've read the specs, I saw that X399 boards support UDIMM ECC memory. But in Memory QVL lists I dont see a configuration tested/approved up to 64GB ECC (or I missunderstood the list which is possible). When I'm ready to spend quite some money in a configuration, I want to be sure memory has been  tested/approved. I just dont want to find myself trying my luck :/

That's what I thought.

What bothers me is, why is the testing and verification of any memory with specific features expected to be done by the mother board manufacture?

The memory controller which is part of the processor and NOT part of a mother board, was designed by the manufacture of the processor, AMD or Intel. They determine what memory will be compatible with their memory controller design, and whether or not it supports ECC memory, or Registered memory.

The memory manufactures must design their products, and use the appropriate components, to match the specifications of the memory controllers designed by the processor manufactures. Whom would know better than the memory manufactures whether or not their product will or will not work with the memory controllers used with a specific platform, like Threadripper?

Yet the model of ECC memory you are interested in does not yet have any Threadripper systems that support ECC memory in their products support list.

Are mother board manufactures expected to purchase EVERY model of memory that exists that could be used with a platform, and test them for compatibility and functionality?

Where is AMD's memory compatibility list for Threadripper processors, including ECC memory models?

Where is {fill in memory manufacture name} list of their compatible products with Threadripper, including any ECC memory models?

I understand completely why you need this information. Particularly given the current price of DDR4 memory, and what 64GB of ECC memory will cost. Given the fiasco that memory support for Ryzen processors is known to be, I hope memory support for Threadripper will be sorted out much sooner (not that it is for Ryzen at this time...) by ALL the parties involved. That will take some time.

sfchun Thanks for your reply, but it's not what I'm expecting :) Ryzen is not exactly TR , and  32GB on an X370 is not 64GB on a X399. As I said I wont try my luck on memory modules , I'll wait it to be tested and approved, clearly defined in the supported list before I buy anything. I just thought 64GB ECC should be normal standard testing for such a beast (TR), and dont get why we have 'Gamer' tag motherboards for it...  Anyways, I think I just need to wait ... hope I dont get too much pissed off and go to intel :/ (too expensive). [/QUOTE wrote: MisterJ's attempt at helping you is an example of all the information that we have at this time, and is better than nothing. So you'll become angry if you must wait too long? You can try to go to Intel, but what platform will you be using? I don't see any X299 boards that say they support ECC memory, since Intel normally requires support from the chipset for some reason, in order to support ECC memory. You'll require a Xeon processor of course.

MisterJ's attempt at helping you is an example of all the information that we have at this time, and is better than nothing.

So you'll become angry if you must wait too long? You can try to go to Intel, but what platform will you be using? I don't see any X299 boards that say they support ECC memory, since Intel normally requires support from the chipset for some reason, in order to support ECC memory. You'll require a Xeon processor of course.