sixstop wrote:now that being said. . .arent the g4s still similar to PCs in overall implementations?
Like i heard their core bus speed is still a single data rate 133mhz for the newest, and been 66 for a long time before that. . .and g4 dont have much cache at all.
Keep in mind that the bus speeds of both PC and Mac are there to maintain compatibility with everything else except the processor. The processor has to communicate with the PCI bus and all the other peripherals like your hard drive and other goodies. Thats why clock speeds of processors are multiples of the bus speed. In essence they have to talk slower to the PCI and other peripherals. CPUs can talk directly to memory at full speed and AGP using the nortbridge controller. After that they use the Southbridge at bus speed to do everything else.
DDR is basically full duplex bus communication. And DDR is used in all new Apple hardware. At least everything 1Ghz or above. Also if you're looking at the Powerbook...the 15" models are due a for an update soon, I'd wait a bit if I were you.
This is all set to change. Intel's implementation of PCI-X and Apple/AMD's hypertransport is gonna make all this a moot point.
At this point Apple appears to be dumping motoroloa for IBM's Power PC 970. Speeds start at 1.8Ghz and the real kicker is it's a 64bit chip. Compared to all the 32-bit flavors out there.
It's all a matter of what you want to do. I just got here (hence the low post count) but damn...I didn't buy my mac for AMVs, but I will squeeze every drop of what I can get from it to make a few.