The Z170 RAM module has a capacity limit of 128 MB.
The Z170 RAM module has a capacity limit of 128 MB.
That's unknown territory. To not make 32GB quad rank modules that are super tall you need 16Gigabit DDR4 dies to make 32GB dual rank module (not kit). We only know Skylake-S works with up to 8Gigabit DDR4, I couldnt find any info about 16Gigabit on Skylake-S. Same for older Haswell-E and Broadwell-E on X99 (without REG). Are you willing to be the lab rat? XD Or you could get one of those air-cooler-get-off tall kits, those use 8Gb dies that do work with Skylake-S. You will have to bet on a 2-DIMM board work with quad rank sticks but it's 1 less trouble than before.
Lab rat here. Just tested a set of 32GB sticks (Team TTCCD464G3200HC22DC01 kit) on my 6700K / ASUS Strix Z270G machine. It didn’t boot properly—CPU_LED (red) stayed on for about half a minute, then DRAM_LED (yellow) would light up and switch back and forth between them. XMP was turned off before the change. I should mention these are brand new for this build and haven’t been tested much, so I can’t say for sure the hardware is faulty. It could also be an issue unrelated to capacity, but who knows? My experience isn’t great either. Hope this helps add a bit more to what’s out there. Got inspired after seeing a page where people reported success using 32GB DIMMs with 6th and 7th gen NUCs.