On Instagram, the current head of RED is teasing a processor not yet released:
"Here at RED we have gotten our hands on a pre-release PC which, with its new CPU, allows 8K 24fps REDCODE RAW playback in real time, while still leaving some headroom. And with the R3D CUDA SDK released this week, you can also take advantage of GPU acceleration and then use that CPU power for transcoding, effects processing, etc.
The smooth processors in the Windows Task Manager are a strong indication of the new AMD Threadripper 3000, which will also be available with 48 and 64 cores from early 2020.
As it looks like the RED decoder actually seems to scale so well that it can use the computing cores of a future Threadripper processor with 8K decoding. This should actually be effective if you can calculate the 8K effects on the GPU in parallel. Nevertheless: AMD fun will certainly not be cheap and not everyone needs 8K processing in realtime in the next months.
;)