Best 32gb dimm for asrock x99 MB

[Agremlin]

I have an Asrock X99 WS mb, in specs on main site the board can support 32gb dimms for a total of 256gb. However I haven't been able to find anywhere which specific dimms are supported. I could 1) use the 32gb version of 16gb dimms on QVL list, 2) get most common (whatever that is) sk hynix/samsung 32gb ecc rdimms.
Given prices now for ddr4 id only buy 1 or 2 dimms and wait for prices to drop but still would be good to get compatible ram first go. Any thoughts?

 

[Marsh]

2) get most common (whatever that is) sk hynix/samsung 32gb ecc rdimms.

I have quite a few Asrock x99 boards in use.
I search ebay , buy the lowest price of sk hynix/samsung ecc rdimms.
Never have any problems.

 

[EffrafaxOfWug]

QVLs tend to be "here's the stuff we've had on hand to test with and confirm it works" rather than an exhaustive list of all memory; I used to have an X99 WS and the Crucial ECC modules I used in it weren't on the QVL. Any DDR4 module that meets the specs should work without issue.

If you're putting a xeon in there and are prepared to buy s/h, using cheap 2133MHz RDIMMs should be a very cost-effective option.

 

[alex_stief]

Just using 32GB DIMMs that happen to share the product line with 16GB DIMMs on the memory QVL won't work.
You will need RDIMM if you want 32GB DIMMs for a total of 256GB, and consequently, a Xeon CPU. 32GB UDIMMs won't work.
That being said, I would just buy the cheapest 32GB RDIMMs I can find, rated for the memory speed you need. Most of the time, that approach works every time.

 

[Agremlin]

Thanks all, have xeon, will see if can find cheap 2133mhz rdimms