Upgrading from Dual 3090s to Higher VRAM Setup
youcloudsofdoom · reddit · 2026-07-12
The author wants to add more GPUs to their existing dual 3090, X299 workstation, 1600W power supply, and 128GB memory setup instead of replacing it entirely, aiming to run larger model files (around 100–110GB).
They are weighing three options: modded 4090s (2×48GB), 2×A6000, or 2×5090. They are also asking if anyone has real-world experience with this kind of "mixed GPU" configuration, and which setup would most likely allow them to run a usable quantized version of DeepSeek V4 flash.
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