What CPU water cooler fits the threadripper 3990x?
Any cooler which states TRX4 compatibility, and there is no such thing as too big with a 64 core beast.
The TR4 socket for X399 chipset is the same socket as TRX4 and the newer TRX40 chipset.
So look for coolers that support TR4/TRX4.
Most Asetek based AIO liquid coolers don't include a TR4 bracket because they expect you to use the bracket that comes with the Threadripper that mounts to the Asetek based blocks (NZXT, Corsair, et.)
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