we just return from Italia with a new setup :
New Macpro 6 cores 3,33GHz, 16GB RAM,
240GB Mercury Extreme Pro SSD for footages
4xNVidia 120 GT 512 MB (Apple)
2 monitor output @ 1080p25 to 2 LG 21,5"
6 output @ 720p25 to 6 ACER P5390W (HDMI, DLP, 4000 Lu, 1280x800 native rez)
1 canon 5D Mark II feeding HDMI input of 1 AJA IoHD @ 1080p25
clips compression : photo JPEG 75% @ 720p25 stocked on SSD
multiple output setup : 6 16:9 1280x720 clips side by side
result is very smooth with 6 different clips on each output
, I still have latency when launching clips via midi keyboard.
A scene with 6 layers and 6 different clips starts in less than a second, synchro till the end (10 mn longs)