I did try that with my original post and it was doing the same thing. Is your cpu the 3900x?
Yes, happily running 3900x with CH6@7403 bios and PBO enabled. Also undervolted in BIOS (offset -0.1V) so the CPU temps even in closed case and all 24 thread AVX (~4.05-4.1GHz, prime95 smallfft) stay below 80C. Without undervolt, it would climb to 85C+, so seems to have effect. Fully stable in all tests, apps and games, no issues so far.
I am leaning towards a BIOS issue at this point but not sure anymore. I will be validating the CPU this week with the retailer just to have that checked off otherwise, I think I am looking at an RMA,
Ivan Rusanov wrote:
Crosshair VI Hero here. Updated to latest 7403, benchmark scores are slightly lower than 7306 (fixed 4GHz from bios, 3600C14 2x16GB, 1800IF).
I see Performance Bias options are updated and configure MSRs differently, but old profiles give me slightly better scores.
Can't load OS (grub 2, dial boot Linux and Win) with CB15 Aggressive profile selected in bios, so not sure what it changes compared to CB15 Gentle. Tried booting directly from Windows SSD, but still no go. Stuck at blinking cursor.
Gen4 for PCI-E is gone.
SMU version is the same.
Did you solve the issue? I have the same issue the system doesn't boot with CB15 Aggressive.