Just for my own edification, writing down the results of an upgrade:
Debug Browser:
Old: 15:42.73
New: 4:20.33
Debug Shell:
Old:
Cold Cache: 1:40.17
Hot Cache: 0:48.6
New:
Cold Cache: 0:46.58
Hot Cache: 0:26.60
Old Machine: Idle 48W, Build ~225W.
New Machine; Idle 98W, build ~425W.