this post was submitted on 01 Jul 2023
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Conventional wisdom is that GPUs rarely saturate the PCI bus to the point that all 16 lanes are used heavily. Think even on the higher end cards it's about a 2-3% loss, so if you need to run something useful like this the trade off can be worth it.
Directstorage won't help because it's still going through the PCI bus. It'll take a custom implementation to open a direct lane between the GPU and the SSD, and I doubt anyone's going to undertake a potentially expensive endeavour like this.