For anyone wanting to test Thunderbolterizer running 10.8.3 and a Magma Expressbox 3T I’ve just posted a guide here:
https://www.coreyrobson.com/post/52451664259/thunderbolt-gpu-is-alive-and-mostly-well
Hope you find it useful.
EDIT: I’ve added new Cuda-z scores for a few different Nvidia GPUs for comparison.
Corey Robson
DP / DIT
Zeppelin Media
coreyrobson.com