A few more tests with my 15 inches Powerbook 867 on Logic OS9/OSX, playing back a 16 audio tracks song at 48 khz : OS9 CPU consumption : seems to be OK. No difference with the EMI 2/6, at the same buffer settings (192) OS9 disk activity : the EMI beats the FW 410 ! Although I used the Powerbook's internal HD for the test, I could observe 20-25 % more disk activity with the FW410 OSX CPU consumption : no visible difference OSX disk activity : no visible difference This leads me to two conclusions : - OS9 driver is the worst of the 3 tested, Windows XP driver being the best one - Latency is the BIG issue on both OS9 and OSX. Unuseable for decent software monitoring. (OSX tests were made with Logic 6.3.1 under OSX 10.2.8) Yann Le Bihan

--- In logic-users@yahoogroups.com, Yann Le Bihan <yann@o...> wrote: > A few more tests with my 15 inches Powerbook 867 on Logic OS9/OSX, > playing back a 16 audio tracks song at 48 khz : > > OS9 CPU consumption : seems to be OK. No difference with the EMI 2/6, > at the same buffer settings (192) > OS9 disk activity : the EMI beats the FW 410 ! Although I used the > Powerbook's internal HD for the test, I could observe 20-25 % more disk > activity with the FW410 > > OSX CPU consumption : no visible difference > OSX disk activity : no visible difference > FWIW, using a FW410 with my 1GHz/512MB PowerBook G4 running 10.2.8, Live 3 @ 48k reports a total latency of 2ms with a 15-sample buffer. Playback of the 8-track "DemoSession" song results in ~28% CPU utilization.