Can somebody please advise me on what Air cooler will fit on my X399 Aorus Xtreme MB. I brought a CM Wraith Ripper for my Ryzen 2950x, but now I have found out the WR is so big that it blocks off the 1st PCIe slot where my GPU is supposed to go. Which means I have to move my GPU down to the 3rd PCIex16 slot. Which air cooler do people recommend to use on the X399 board for the Threadripper and will NOT cover the 1st PCIe slot. I do not want to install a watercooler, as I prefer air cooled.