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Old 07-29-2019, 12:23 AM
brighttail brighttail is offline
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Originally Posted by c-attack View Post
3200 seems to be an unlikely cliff for a X299 board, but you never know. My now 'ancient' 4x4 Dominator 3200C15 for X99 clocked right up to 4000 on my Z370 Code. The 4x8GB Dominator RGB 3600C16 kit that replaced it will run 4000+, but there were some small changes for me. My Dom RGB kit does not like any of the Asus Tweak 1/2 levels. That is an instant fail every time. However, with tertiary a bit relaxed, the speed just keeps going up. The returns up there are small to non-existent, but it boots and runs.

As always, watch your SA and IO voltage on Asus boards. Nobody needs 1.40v for those. Try 3466 with the same primary timings as XMP and 1.39v. Leave secondary and tertiary timings on auto. If you can that to work, then there is a stepping stone toward 3733 or something else.
So I took some of your suggestions and started with 1.39v and was actually able to get a stable 3600 from 3200 by changing the timing from

16-18-18-36 to 18-21-21-43 Not sure about the right calculation there but memtest did all the modules full 105% with no errors. A thought occurred to me are there other settings like in the VCCIO or such I need to be giving a boost to help. FYI I did have the initial boot boot with 1.42v and the landing voltage was 1.39.

I haven't checked to see if moving this all to 3600 with the relaxed timings is doing better or worse than the 3200 at XMP timings yet. There are trade offs!

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