Geez, that took longer than I thought it would. The new board didn't fit in my old case; not surprising as I'd been stupid and forgotten I've been using MicroATX for years now. Anyway, fancy new case received from my friendly local PC store whom I've been meaning to share some love ($$$) with. I'm new to DDR5, so the first power on cycle seemed like POST was hanging on code 15. According to ASUS, code 15 is actually a pre-memory system check buuuuut can be caused by memory problems. I dorked around with moving my two sticks of RAM back and forth and eliminating one or the other until finally a bit more googling suggested it was memory training taking a moment. And sure enough, after about 60 seconds, the screen came up and the numlock light on the keyboard lit. Bleh.
I'm curious as to why you chose that amount of memory, what will you do with that much?
In my 5950X build, I wanted 64GB of RAM and ended up having to go with four sticks to arrive at that total. It made memory overclocking difficult, or more specifically, getting my FCLK up to a good range with MCLK. With four total sticks, it took forever to get a 1733 FCLK / 3466 MCLK stable. In any case, I wanted to go with just two DIMMs this time, and you're gonna laugh at me, but I didn't want to regress from 64GB to 48GB
To keep 64GB, I'd have to go with twin 32GB modules and NONE of the memory ICs in 32GB chips are "good" at overclocking. I could get 6000MT/s at like CL40, or I could go stupid with something like 8000MT/s but with really loose timings -- and I really just wanted to use the 1:1 UCLK / MCLK settings. As it turns out, the QVL on my board provides a single option for 48GB DIMMs with 6400MT/s and CL32, which is just about the best timings I could find regardless of total DIMM capacity. And with a black Friday sale, the 96GB set was about 25% more than a 48GB set, so I bought it.
I haven't even started playing with FCLK yet, but the DIMM pair fired up with DOCP at their rated 6400MT/s CL32-38-38-80. Right now I'm posting here, and then I'll start putting the CPU through its paces at stock speeds. And then I'll start playing
edit: I meant UCLK, not FCLK, for the 1:1 with MCLK on this platform. So many CLK's
