Case #1
-----------------------------------------------
***The minimum hardware requirements for Windows XP Home Edition are:
Pentium 233-megahertz (MHz) processor or faster (300 MHz is recommended)
At least 64 megabytes (MB) of RAM (128 MB is recommended)
At least 1.5 gigabytes (GB) of available space on the hard disk

***Bodhi Linux System Requirements
300mhz i386 Processor
128megs of RAM
1.5g HD space

Which OS will run faster on a system with Intel Celeron 633 Mhz processor and 160 MB Ram?

-----------------------------------------------
Case #2

PCLinuxOS or Windows XP or Ubuntu or Xubuntu or Lubuntu or Joli OS or others(please provide the name)?

Which OS will run faster on a system with Intel Pentium IV 2.4 Ghz and 768 MB RAM?

-----------------------------------------------
Case #3

Ubuntu or Windows Vista or others (please provide the name)?

Which OS will run faster on a system with AMD Althon TF-20 1.6 Ghz and 4GB RAM?

-----------------------------------------------
Notes:
Based on fastest processor: 1.6 Ghz > 2.4 Ghz > 633 Mhz
Case #1 is a 12 year machine. (Desktop)
Case #2 is a 8 year machine. (Desktop)
Case #3 is a 2 year machine. (Laptop)

I am not going to speak as to the performance of Linux versus Windows; really that is something you should experiment with. However, pertaining xp, I'm convinced that the 128 mb should be just for windows. Of course you start factoring in software and it will really slow down with only 160 mb. 128 mb might have been fine 9 years ago when XP came out but the system resources of third party programs has for the most part gone up since then (also many love to run all of the time). Because of that I would not put XP on a system with anything less than 512 mb and preferably 1 gb or more. 768 mb should be fine for light computer usage. Really all these questions are reletive to what you do the most on your system.

Thank you.

No problem.