The CPU in question--the 2990WX--has the added "W" for "workstation", whereas the lower core parts (which don't seem to be affected by the Windows scheduling is

The CPU in question--the 2990WX--has the added "W" for "workstation", whereas the lower core parts (which don't seem to be affected by the Windows scheduling issue) do not have the "W" denotion. Most TR users I know are running Linux or hypervisors.