MSI VENTUS 3X RTX 3070Ti pcb for those who may need it. For reference the inside distances between the mounting holes are 64mm and 50mm exactly. : r/watercooling
Amazon.com: MSI Gaming GeForce RTX 3070 Ti Gaming X Trio 8G 8GB GDDR6X Graphics Card - NVIDIA Video Card GPU for Gaming PC, 256-Bit HDMI/DP Nvlink, Ampere Architecture Computer Graphics Cards (Renewed) :