running tiger on a sawtooth G4 (CPU=400 mhz and 896 meg RAM) and dashboard works fine for me...same on my ibook (cpu=933 mhz and 383 meg RAM).
Dont know about the ripple effect though. Havenot tried it and wouldnt know what it is if it bit me on the bum...it sounds like an annoying feature that you would turn off ala dock magnification!
It would really be cool though if I upgraded to a 9600/9700 ATI radeon card
*dreams*
but then, hardly any program's are designed to take advantage of the newer Radeon cards so its a 50/50 decision- get the card for games etc (which half of them wont really work-if anything, it would go backwards almost) or get it for the operating system?
Tiger worked OK on the G3 (went back to 10.3.9 as I took it to school) but then many features where broken on the version of tiger I was trialling (it was about the 2nd last version before GM)..... It really snaps on a G5 but its perfectly fine on my G4's.....
Spose you have to decide what it is that you want in an OS- it really sped things up on the G3 and G4 which is unusual- I thought it would drag along
*is not a fan of CPU sucking useless features*
Check out apples tiger upgrade page to see the eligible machines
http://www.apple.com/macosx/upgrade/requirements.html
It will work on a SE clamshell!! (the clamshell only has about 5 gig of hardrive and a full install of tiger is 3 gig!)
LOL