core i7-920 (2.66 Ghz) and a few others.

[sbike]

I used:
time ./HandBrakeCLI --input=test.vob -q 0.50 -e x264 -o test.mp4

None of these machines are over clocked, are are using the 0.9.3 HB release.

core i7-920, 2.66GHz, 1333 MHz memory, 64 bit ubuntu 8.10, 4 CPU = real 0m54.942s
core i7-920, 2.66GHz, 1333 MHz memory, 64 bit ubuntu 8.10, 8 CPU = real 0m55.574s

Intel X3350, 2.66GHz, 1333 MHz FSB, 45nm, 12MB L2 cache, 64 bit ubuntu 8.10, 4 CPU = real 1m0.471s
q6600, 2.4 GHz, 1066 Mhz fsb, 32 bit ubuntu 8.10, 4 CPU = real 1m27.422s
core 2 6320, 4MB L2 cache, 32 bit ubuntu 8.10, 2 cpu = real 3m13.420s

So basically at least on the core i7, hyperthreading doesn't help, and the i7 has about a 9% advantage at the same clock over even one of the nicer core 2 (with the larger cache and faster FSB).

[NickF]

Core i7 920 2.66 w Windows 7 64 RC1 and Handbrake svn2592, using the 9.3 high profile and deinterlace slowest, for a 500 mb vob:

with HT (8 processors): 10m29s

without HT (4): 13m95s


so for me HT enabled is considerably faster