Excellent review TTL!
I can't get quite the same peaks on PBO in cinebench R20 (stuck at ~28K), but it chews renders, VMs, and anything else I can throw at it.
I find I am hitting current / power limits before I hit the heat limit when I OC. I can get 4.2 all core at 1.38V, and can hit 600W+ on the CPU (according to AIDA), but if I hit it with a prime load, despite the temps being below 95C, it will hit OCP limits. Does the Alpha have a higher than 200% power limit over the Z2E?
Getting the heat out of this chip is nearly impossible, I'm running a quad + single 120mm (so 5 x 120mm) just for the CPU loop, and an EK waterblock for the threadripper chip (needs to be a big cold plate), and even so I see delta T (above the coolant) of 70C. Reminds me of the pentium 4 days (except this time with the performance to match!)