I ordered the Signature GPU Block - Kingpin 3090 so it should be here in time to install.
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I will play with the GPU on X299K Rig that now has a GTX1080Ti Hybrid Graphics Card.
Then I will replace my Z390 with the 2080 Kingpin with the EVGA Z590 DARK and the new RTX 3090 Kingpin and cool it all with my Chiller.
I found out that I may not be able to use this Water Block on the Z590 Dark