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The thickness provided with the BP-VG3080ASF water block is 1.0mm, 2.5mm, and 0.5mm. Here is the link to this water block, you can download the installation guide.
Due to different graphics card versions, the height of the parts is different. If the thickness of the thermal pad on the VRAM is insufficient, please replace it with the 1.5mm or 2.0mm thermal pad.
https://shop.bitspower.com/index.php?route=product/product&product_id=7881&search=3080ASF