my desktop with watercooling. bought the 8 core black edition water cooler off ebay for 50 dollars shipped and stuck it on my 6 core, combined with opensource drivers for linux its awesome though lm-sensors integration is on my todo list.
to be honest i’de trade it in for a nice laptop, its hard to beat 40 watts of laptop anymore and storage is getting better by the year.
kuhlerd installed to run with the amd fx water cooler on linux.
linux suse 13.1 ( though the LTS version of ubuntu 14.01 is tempting) I stick with suse because of the gui tools yast provides for administration of the system.
extreme 3 motherboard with 3 or 4 videocard slots.