I have a C7-D that i use as my media server (although unencrypted, so i can't vouch for that part of it).
I also have a C3 that i'm donating as an itunes server for my sisters gym, all it needs to do is play music, so i guess it'll work, or, i'm hoping it'll work.
the C3 has a generic P3 heatsink on it, with no fan, and i've run it for hours and hours, and to be honest, case fan or no case fan, it just works. it doesn't overheat, it doesn't throttle, it just keeps going.
The C3 and the C7-D both are more than capable of running off 150W or less, with some full blown system inside. i haven't had a chance to put my 9600GT inside with my C7-D, but i don't see why it would have any problems, just a whimpy little C7-D with insane graphics.
I use my C7-D for movies, so it really makes no difference to me. The C3 i've actually never really had a chance to use, it was given to me a few months ago, but i didn't have a use for something from the P3 era...my best computers run DDR2 RAM, what am i going to do with SDRAM and IDE at this point?
unless you're gaming, go for the C7-D, it's got plenty of power for office productivity, youtube and facebook.
|Dual Intel Xeon E5-2670v2--Xigmatek SD1283 DK-II|Asus Z9PA-D8--HR-05 IFX|128gb DDR3-1600 ECC RDIMM|240gb SSD, 640gb, 1TB, 2TB HDDs|nVidia GTX660ti 2GB|Antec HCG-750|NZXT Source 210 Elite|M-Audio ProFire 2626|Art TubeOpto8 with Smooth Plate Tube Swap|Avid Artist Mix x2|
A 9500GT with 1GB of RAM is the most pointless thing since NASCAR.