I swapped out my Latitude D630 laptop to use as a server, and bought a used $50 D620 (missing parts, had said missing parts, was in really good condition).
The D620 has a Quadro NVS 110M in it, and it looks like it just sucks power up endlessly. I could get 14W usage when in use on the D630 (integrated Intel GMA965), but i get 35 - 40W on the D620.
Would underclocking it help save power and also help it not get really loving hot on the bottom? I have it running stable at a 140MHz memory clock and a 40MHz core clock, but I'm curious if that'll even do anything leaving it there.
EDIT: Safely pushed it down lower to 100/30, runs just fine without compositing (running Linux) on.
EDIT2: Installed and tested PHC to get as low as an undervolt as I could get on the CPU, that saved another 5W; also forced the powersave CPU governor, saved another ~2W.