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Thanks for that. The mini squirrel cages only draw 0.12 amps, so if one or two of them can be made to do the job by applying them efficiently directly to the end of the heat sink, I am OK with the coolerguys. The Aquacomputer LT seems like it would need a Windows machine to set it up...

Coolerguys to the rescue on the programmable 12V temp control: http://www.coolerguys.com/840556090885.html

Ideally I would find a thermostatic multiple fan speed controller with definable hysteresis parameters for 12v supplied power and 12v fans. I have yet to find one; most are just manual speed control with temp readouts. Better than nothing I suppose, but sort of basic considering the...

Just wondering whether to monitor exhaust temp or stick the thermistor way down at the base of the heat pipes somehow. I will probably end up with a couple of those small fans blowing into one end on a fan controller.

On a side note that I'm certain has been discussed ad nauseam somewhere by gamers: What would the target max operating temp for an M2090 GPU be? Is there consensus? If so, based upon what? The glass transition temp of the circuit board material? Thanks.

I am running 295.41 or whatever the latest download is. Nvidia-settings gives temp info on the quadro 600 but not the tesla.

Yes I considered positive case pressure. Basically the 120mm fans do not generate much pressure at all, unless they are high speed, in which case noise is an issue again. All fans would have to be the same, or you would only pressurize to the level of the weakest one, at which point it would...

Yes the twin hair dryer sound is growing old rapidly. I understand now why you are committed to water cooling. Interestingly on the air cooling front, however, I did find these: http://www.olc-inc.com/CFR2B.html Not cheap in small quantity, but it produces a nice even flow and has a bracket...

Static dissipation is normal in dust collection systems to prevent fires from static discharge igniting the dust in PVC or other plastic duct/hose, to the extent that tubing is made with internal wires for this purpose. Here it is just to keep from frying the card with static discharge to the...

photos The card I got has a nice plastic case. It looks like a C2075 or similar, but there is no fan. I purchased a mounting plate for it and some little fans from ATACOM, who are fantastic to deal with. Re: the fans, I bought the sequential counterrotating ones found in servers. They have the...

cheaper here: http://www.provantage.com/supermicro-fan-0038l4~7SUPM3T8.htm And on the small format axial fans, this one is loud (59dB-louder than a quiet vacuum cleaner), but 4-pin, rated at 2.61" static pressure (I think this is why they like these counterrotating fans in servers)...

PWM blower FYI this one has PWM control/ 4 pin plug: http://www.abmx.com/4pin-pwm-blower-97-x-33-cm-for-114xx-123xx-server-models It says 97"cm" but that would be kind of big and would not fit into a server, so I think it is a typo and they mean "mm". Power at 1.5A 12V seems like it might not...

I talked to one of the cooler guys at the website store. He said he woukd probably stick with existing heat sink/fins and put a pwm fan on it. Looks like the fin planform short axis is about 8cm; could go with two 70mm on the side or one of these (non pwm) blowers on the end...

In that case, I would think any GPU cooler configured for a higher end NVIDIA board would work, e.g. http://www.coolerguys.com/840556098799.html Not as elegant as water, but it is probably a bit easier to get up and running in my case. How does one remove the existing fin assembly (I...

Looks like the server setup is just some little fans on one end that blow longitudinally through the fins. So put a plate over the fins that extends beyond the end of the card, and mount some fans on that with glue or whatever. Here is the server setup...

I'm also taking the M2090 plunge. Thanks for the details; very informative. Think I will stick with air cooler, fan in the middle, blow straight in with vents on either end. I think one would be bold to discard the nice stock vent setup, unless space is an issue, as one should be able to achieve...