hi,
i was wondering if fc 4.0 can run well on my mac pro which is a few yrs old. will it be slow to edit HD video formats? i have 1gb ram installed and tiger.
I guess that depends on whether he means FCP or FCE (no distinction was made). FCP4 supported HD, but I believe only uncompressed (no HD codec support; that didn't come until Version 5/FCP-HD). FCE4, of course, is the latest version of FCE so that will support HDV and AVCHD formats.
Either way, definitely upgrade your RAM. 1GB is pretty minimal, even for SD projects. Your MBP model will go up to 4GB and it's a relatively cheap upgrade at OWC.