I had about five of the Gridseed miners and found out quickly that they are extremely loud. Just watch the following video and wait until he zooms in on the watt meter. As he gets closer to the meter, the camera picks up the background noise of the Gridseeds:
Ultimately I removed the Gridseed fans as the fans are only necessary if you’re going to mine Bitcoin or other coins using the sha-256 algorithm. But I don’t think it’s a very good idea to use Gridseeds to mine sha-256: the algorithm is power hungry, it generates lots of heat (hence the need for the fan) and it’s really not very profitable at the scale you would be mining at with the Gridseeds.
You can see the Thermaltake fan on the second level below the Gridseeds (the Raspberry Pi controller is on the first level):
Don’t Bother w/ the Fans for Scrypt Mining
For scrypt mining, running the Gridseeds without fans has a few benefits:
- Power consumption is cut from 8 watts per unit to around 4 watts. A power consumpiton of only around 20 watts to run all 5 Gridseeds is great compared to gpu mining rigs & other asics. You can leave it on without worrying about setting aside a portion of your profits for the energy costs.
- It’s quiet.
- The thermaltake fan is completely speed- adjustable. It’s a great fan for about $20 that I recommend highly: http://www.amazon.com/Thermaltake-Mobile-External-Cooling-AF0007/dp/B002OJN250
I honestly didn’t even need the external fan and could’ve left them near an open window, but I thought the adjustable fan would be good insurance. The Gridseeds have proven to run steady without their fans: