TaiChi X370 not staying with 64Gb RAM

[stevebarnes]

I had 2x16Gb 2666 DDR4 in my board, and put matching DDR4 in and it won't start. I checked the TaiChi X370 manual and it states it won't accept all four sticks at that speed. I gather they all have to run at the same speed though.

I'm doing video editing in Manjaro Linux using Davinci Resolve Studio and could really do with 64Gb.

Can I slow it all to 2100?

How will 4@2100 compare to 2@2666? Will the motherboard be smart enough to spread demand across all four sticks, thus making performance 4*2100=8400?

Here's a copy of the motherboard manual: .

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