The Speed Chart Comparison found at
describes 22 Major Distributions for Speed,Usability,Graphic
Quality, and Memory Usage.
A must look.
The YV2 has been proven to be the Fastest Linux OS in the World.
Downloads are available ,

Comparison chart includes:
Suse 9.0, 9.1, Mandrake 10, Debian, Slackware10,Lorma5,LBA,
Xandros,Knoppix 3.4,Overclockix,Onebase, and many more,
definitely worth a look see.