i just succesfully hooked-up the tripplehead2go with a 2x2Ghz G5.
works great with QC.
i run a single 17"/1280x1024 flatpanel on one port, and 3 smaller
ones using the 3head 2go with a total resolution of 2400x600 on the
other.
sadly the performance of the graphics-card (geforce 6600LE) is
quite disappointing.
using qc fullscreen, it barely plays 3 dv-files at 30 fps. (3x
image with movie, connected to 3 billboards set to exactly fill the
dimensions).
that's not necessarily the video card, but can be a CPU limit or disk
throughput too
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Pierre-Olivier Latour email@hidden
Quartz Composer Team Apple Computer, Inc.