Can 10.4 be installed on the latest MBPs?

I'm fed up with Snow Leopard. It's the worst OSX ever made by Apple. I've recently powered up the old PowerMac G4 (dual-1.25GHz with only 1.5 gigabytes of RAM), which runs 10.4.11 and OH BOY how much faster it is than my Snow Leopard on my MBP15/2009!!! After nearly a day of working on it it still feels pretty snappy, and has about 1 gigabyte of RAM available, with about 150 megabytes of "Active memory"! On my MBP15 with Snow Leopard? Well... I have only two apps running right now - Mail and Safari, and... 15 megabytes of free RAM, and the whole system feels pretty slow. Showing 2.2 gigabytes of Active memory - what the **** is taking that much memory??? There are no apps that take more than 300 megabytes of RAM in Activity Monitor, and all processes together are only taking about 600 megabytes of real memory...
So I want to switch back to 10.4.11 on my MBP15. Does anybody know if it can be installed? I'm guessing the new MBPs have some hardware that 10.4 might not have support for... Any ideas?

I have multiple Macs at work, all exhibiting the same issues.
Reboot your system, launch Safari and check how much memory it's taking. Go to so e graphics heavy site, like www.gamespot.com, for example. Compare the amount of RAM it's taking in Snow Leopard on Intel Macs with the amount on Tiger, running on PPC. 300-400 megabytes on Intel easily. In Tiger on PPC it hardly ever gets above 120 megabytes.
Or just reboot the system and note how much free RAM is in the system. In Tiger on PPC with 1.75 gigabytes of RAM I have about 1.5 gigabytes free. On Intel? Out of 4 gigabytes about 2.5 is free.
But try importing a very large video clip from a camera, using iMovie. On Snow Leopard the system will become so slow that at times iMovie might not even finish the import and instead would fail with an error (and about 2 gigabytes in swap). On Tiger the import is virtually impossible to notice.

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