The GUNNIR Arc A380 Photon OC graphics card now has its own custom block, the Bykski I-GNA380-X GPU BLOCK. So far, the GUNNIR Arc A380 Photon OC is the only desktop Arc model on sale. Whether or not the GUNNIR circuit board is a fully custom design is yet to be clarified. It remains to be seen which makes more sense given the price and reference layout shared by Intel, making it difficult to conclude whether the Bykski A380 waterblock will fit only one model.
Currently, the full cover block only ships with support for the GUNNIR board with the ACM-G11 GPU and 6 GB GDDR6 memory. The board comes with a single 8-pin power connector that is good for 92W. With this power requirement, a highly sophisticated cooling solution is not necessarily required, and we are surprised to see a liquid cooling solution here.
From what we can see, the waterblock is a single slot which is good for smaller and quieter builds. However, there are not many A380 users with these builds. So far there has been no mention of prices on the official product page.