A user wants to add a second 7900XTX to achieve 48GB VRAM, but is concerned about using a B450 motherboard with PCIe 2 on the second slot. They question whether PCIe 2 will significantly impact performance, especially given the CPU's 24 PCIe lanes and limited support for tensor parallelism in these GPUs.
Adding second 7900XTX via PCIe 2 on B450 motherboard
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