The Meltdown and Specter patches were rumored to hit Optane pretty hard and since I am using a 905P in my new workstation as an OS/app drive I decided to do some testing. I tested 4 way VROC 0 as well. The top pic has the OS set to 1709 (with no updates) with the last BIOS I could find before the microcode updates started being mentioned in the notes. The bottom pic has the OS set to 1803 + kb4284835 + kb4100347 and the current BIOS for this board. In both pics the 905P is on the left and the 4 way VROC 0 900P is on the right.