EK released a Socket TR4 based monoblock made for several ASUS X399 motherboards. The RGB Monoblock has an integrated 4-pin Digital RGB LED strip compatible with ASUS Aura Sync.... EK Offers RGB monoblock for ASUS X399 motherboards
I would rather have Copper based full coverage waterblock, have one Nickel WB which looks good but friend have Nickel WB which starting to peel Hope this helps Thanks, Jura
Why you need it, because noise, this Enermax TR4 is noisy bastard and custom water loop is still quieter than any AIO on market plus you can cools yours GPUs etc Plus above waterblock is full coverage block which will cools yours VRM plus CPU etc, VRM cooling on X399 I don't think you need it but everything helps, this VRM cooling will be more beneficial on X299 than on X399 Bykski WB cost less and they perform on par with EK or Phanteks or XSPC blocks Hope this helps Thanks, Jura