With a typical graphics power (TGP) of 450 W, and power limit of 600 W, the upcoming NVIDIA GeForce RTX 4090 will be one hot GPU if not cooled really well. We don't expect a single 2-slot air-cooled RTX 4090, and even 3-slot could be close-to-reference, leaving 4-slot to be the standard (at least every custom RTX 4090 leak we've come across points to a 4-slot design). Twitter user "wxnod," behind spectacular leaks of ZOTAC and GIGABYTE graphics card boxes, is back with pictures of what is possibly the cooling solution of a custom-design RTX 4090 (or RTX 4080). The cooler features multiple aluminium fin-stacks skewered by as many as thirteen 6 mm-thick copper heat pipes. These pipes don't make contact with the GPU, but rather a copper vapor-chamber that serves as a base-plate for the GPU, and possibly memory chips surrounding it.