So pretty much I just got a new mac and it's very fast for just regular internet browsing but, the videos are SOOOOOO choppy! Its a Mac pro. (one of the older ones)

System Specs: 1 GHz PowerPC G4
1 MB L3 cache
2 GB DDR SDRAM
Thats pretty much the IMPORTANT parts, I DO have flash player, nothing helped. Its not even one of the newer flash players because I know those ones are having problems, my internet is terriffic, every other computer in the house runs them smoothly, those computers have 3GB and 4GB of ram, also. I had a crap computer before with like 1GB of ram and it ran videos prefectly smooth, im running mac 10.4.11 so WHATS THE PROBLEM!?!?!?!?

It's not a Mac Pro. It's not just older, it's a good 8 years old at least. It's CANNOT use more than 2GB of DDR 333 RAM. It's old. It's slow. It's not going to run Flash videos smoothly no matter what you do to it. Next time, if you want to buy a computer, don't buy one that is rapidly approaching obsolescence.