I’ve found that DGX Sparks can get pretty warm when you cluster them together. You are forced to keep them close together because the ConnectX-7 cable made for these is extremely short )like less than a foot).
I have both a DGX Spark Founder’s Edition and a GIGABYTE AI TOP Atom (Spark clone).I decided I wanted to add some active cooling to the cluster so I found cooling case plans for a 2 Spark fan case that someone posted to Thingverse:
https://www.thingiverse.com/thing:7355793
A friend of mine 3D printed it for me in PETG filament which he said was better for higher temperature applications than standard PLA.
The cooling enclosure has space for 2 Sparks (or Spark clones) plus a removable shelf in the middle that leaves a gap between them for air flow. The front of the case has space for a 120mm x 120mm x 25mm fan. It also has two retention rods that slide into place to keep the Sparks from sliding out the back of the enclosure.
I wanted the cooling fan to be automatically thermostat-controlled, so I bought an AC INFINITY fan controller that has a temperature probe. This controller is normally used for adding cooling to home theater rack enclosures or grow boxes for “hydroponics” (wink, wink), but I thought it should work of in this application as well.
AC Infinity Controller 2:
https://www.amazon.com/dp/B00NG9TSG4?ref=ppx_pop_mob_ap_share
I can set a maximum temp that will trigger the fan to come on, and the unit will adjust the fan speed as needed based on the probe temperature feedback.
I chose an AC Infinity MULTIFAN S3 USB fan (https://www.amazon.com/dp/B00G05A2MU?ref=ppx_pop_mob_ap_share) because it was made to pair well with the fan controller of the same brand. Noctua also makes a USB fan, but it is only available in that ugly brown color that they make.
I’ll probably build a separate enclosure for the fan controller since it has mounting holes and is meant to be recessed mounted into furniture.
I literally just finished the build yesterday morning, so I haven’t run any performance tests on it yet but I will definitely do that at some point soon if anyone expresses interest in knowing that kind of information.
The fan controller was $50, the fan was $15, and my friend said the 3D print consumed about 3/4 of a $20 spool of PETG filament. So about $80 for all the parts.
This particular 3D print design has been out for a while. Anyone else using a similar enclosure? Is it doing ok for you so far, or have you switched to something else?