I can't believe how loud these are. I have an extra PS, it looks like the top panel can be removed almost in one piece. I have a buddy that can laser cut sheet metal. I might have him cut out two openings so I can put two 140mm fans on top. I just dont know if the logic board will throw a fault because it doesn't detect the original fans to be on.
Here are some pics of how we made the harness. My buddy owns a cable manufacturing company and even using $120,000 of equipment, the time and effort was not worth it. I only made these because of the delivery time to get J4bberwock boards for the first 52 Antminer S5's. I highly recommend not even consider doing harnesses and just buy the boards.
The equipment we used to do this project was an auto feed wire cutting and stripping machine that did all the 10 gauge black and reds. Then we used an automatic stripping machine to get .6" on the pre-made PCIE wires we got from klondike_bar. An ultrasonic welder was use to join the wires. Had to use a 150 watt soldering iron to join the welded pads to the power supply.
There is also a shot of the power meter when the room was hot and the fans were at max, it was drawing 3785 watts.
3785 watts? 2880 with 94%n is 3053watts how is it more?
I have no idea, going to test a few and see if they draw differently.
I do believe the power supply will work with out the fans. But if not cooled it will self distruct.