Yes, all dual rank, not single rank.
Just as a side note, it seems like the continuing tweaks by AMD has improved DRAM latency somewhat, as I'm down by almost 0.5ns.
Yes, in reality it's nothing, but it's consistent and I haven't changed any settings.
Interesting findings there. I updated to 1100B BIOS on my Asus the other day, no change. 53-54GB read and copy, 66.9ns at 3733 16-19-19. Maybe it's a Gigabyte thing, or maybe it's a Master thing. It's a nice high end board in terms of memory overclocking, even though it has 4 DIMMs.
In terms of 2x16GB kits, there are a lot of decent
DR kits out there. Just G.skill alone has a Trident Neo and a Trident RGB kit, both 2x16 and 16-16-16 B-die at 3600. But those are DUAL rank 8Gb IC kits and nothing new. You can't make 16GB
SR with 8Gb ICs like B-die/Rev.E/CJR.
This is the
SR kit with 16GB DIMMs I was talking about, using Micron's new 16Gb Rev.B. It's very different from the usual DR B-dies:
From hard-core gamers to casual players, we have the gaming products you need for the gaming experience you crave. Crucial's high performance gaming memory and storage fuels legendary gaming experiences.
www.crucial.com
Crucial is doing a lot of crazy things with these new 16Gb ICs. BZ claims they're even better than 8Gb Rev.E (a welcome surprise given how horrible every other 16Gb IC has been up till now).
- SR 16GB sticks (as is normal for a 16Gb IC)
- DR 32GB sticks (as is normal)
- but also SR 8GB sticks (where they disable part of each memory chip to make it essentially 8Gb, while retaining superior performance of Rev.B).
Basically, very impressive, but the 16GB DIMMs are SR sticks so unless in 4x16GB kit, they should theoretically suffer like 2x8GB B-die does, making them possible a worse choice for Ryzen than the usual DR 16GB Rev.E sticks (because we can't make use of the excellent frequency scaling of Rev.B).
I can't get my hands on these right now, far too expensive over here. But $150 USD is a very reasonable MSRP.