Could you please share your settings (secondary/tertiary timings and SA IO VDIMM DMI voltages) for daily use ? I can run 4600CL17 2T on my Apex XI absolutely fine, but can't make it boot to Windows at 4000CL15 1T. Posts fine, but im getting bsod when trying to boot. Tried 231, 802 and 805 bios with no luck.