Galax made a single-slot RTX 4060 Ti for Mini-ITX enthusiasts

4090 Specs RTX 5090 RTX 4090 Interface PCIe x16 PCIe x16 Memory X GB GDDR7 24GB GDDR6X CUDA cores 24,576

At worst I might expect to see a difference in FPS measured in single digits, if you could measure any difference at all that wasn't

single board computer with pcie slot There is a GeForce RTX 4060 Ti with single-slot blower cooler, but will it be available widely Scam Nvidia RTX 4090 uses a relabeled RTX 3080

single slot bracket ASUS ROG Strix NVIDIA GeForce RTX 4090 OC Edition 24GB GDDR6X Graphics Card Slot - Single Slot - Minimum 300W PSU - Low Profile Support Budget-friendly