Be very very sure that consumer geforces can go in 1u boxes. It's not so much the space as much as I'm skeptical with their ability of handling the thermal
issues. They are just not designed for this kind of work.

I've had to go to 2u and eventually to larger boxes because of power supply and air-flow requirements. This is a big issue.

I'm a bit puzzled here. sumermicro sells servers that take either two M1060's, or two C1060's, or two of any pcie 2 x16 cpus. their airflow design seems at least thought-about, and their PSU is 1400W.

C1060 specs merely say "200W max, 160W typical" - which is probably about the same as gtx275 according to wikipedia. so something like 600W expected from 1U - not really that hard, especially if you don't
have a wall of 40u racks full of them...

Note that geforces are overclocked (my gtx 285 by 30% compared to a tesla with
the same chip)

well, they're tuned differently: gf cards have substantially higher memory
clocks and lower shader clocks.  tesla has higher shader and substantially
slower memory clocks (presumably because there are more loads on the bus.)

and are actively cooled, which means that you need to get air flowing into the side fan. That's exactly why they put the tesla m and not the
c into those boxes.

why is this a problem with 1U?  or do you really mean "double-wide cards
don't provide enough clearance in 1U to get air to the card's intake"?

-mark hahn
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