Today, I received a donation of a Gateway tower, 2.26 Ghz, 512 mb RAMBUS ram, 40 gb hard drive @ 7200rpm, Nvidia GeForceMX 440 graphics (128mb). Except for the RAMBUS ram, it's a really nice machine. Rambus is actually an excellent and fast type of memory, but the company screwed themselves with a stupid licensing deal, and their memory is WAY too expensive. It would take $500 or more to take this computer up to 1 gb of memory, and it's not really necessary with the RAMBUS type of memory to do that.
This computer is the first I've had with a good enough graphics card to use Compiz-fusion - the desktop effects that comes with Ubuntu. I decided to enable the effects, install the effects manager and play a little.
Mac OSX and Vista got nuthin over compiz for desktop effects! Here's a demonstration of what the desktop effects can do:
While I like the effects, I probably would rarely use them myself.