I’ve seen other people successfully getting 128G of ram to be recognized. But on my board even a single 16G stick provides the no-ram / memory error beep code (5 short 1 long).
I’ve updated to the latest bios from SuperMicro (2.1a) without success.
D/L Link for original bios: Firmware Resources | Support
SuperMicro C7X99-OCE
Corsair VengeanceCMK128Gx4M8B3000C16 (8 x 16, 3000Mhz, 16-18-18-36 1.35v)
Intel i7-6950X