Nosimo Posted December 25, 2020 Share Posted December 25, 2020 Asus Z490-F Gaming Pro mobo and CMW32GX4M4D3600C18 ram kit. I can get the board to post with XMP enabled if I use any combination in only 2 DIMMS but if I fill the board it won't post. I have managed to get all 4 to run at 3200 but no dice on 3600. The kit is on the QVL list so it should be supported. Is this an asus bios problem, bad memory pairing? Suggestions? Link to comment Share on other sites More sharing options...
c-attack Posted December 25, 2020 Share Posted December 25, 2020 See what the BIOS is assigning for VCCIO and VCCSA voltage (way down toward the bottom of the AI Tweaker column, Advanced BIOS). The tipping point is right around 3600 as to whether it assigns a somewhat reasonable 1.2x value for both or bumps it up to 1.30 IO, 1.40 SA which is too much and makes my Formula XII unstable. That said, not even posting is not typical of inflated IO/SA which normally cause problems in the OS environment. Link to comment Share on other sites More sharing options...
Nosimo Posted December 25, 2020 Author Share Posted December 25, 2020 See what the BIOS is assigning for VCCIO and VCCSA voltage (way down toward the bottom of the AI Tweaker column, Advanced BIOS). The tipping point is right around 3600 as to whether it assigns a somewhat reasonable 1.2x value for both or bumps it up to 1.30 IO, 1.40 SA which is too much and makes my Formula XII unstable. That said, not even posting is not typical of inflated IO/SA which normally cause problems in the OS environment. It would occasionally post at which point windows would give a blue screen before the login screen or shortly after. I entered the XMP 2 values manually and set the io/sa voltage at 1.2 and so far so good. Thank you. Link to comment Share on other sites More sharing options...
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