Booted the .iso cold from a usb key, desktop came up way faster than expected. For non old computer , it might be a very good consumer OS. : fast on C2D 1.6G, 50% of the 4G of ram were used quickly.
http://www.linuxatemyram.com/
I understand cache policy makes comparisons dumb, but I sleep better when my computer has less to manage.
That said since it boots as a live cd .. a lot might just be the root fs.
selfacepalm