Dual 4090 vs 4090+3090: Is the Extra $1K Worth It for Local AI?
sivadneb · reddit · 2026-08-17
A Reddit user asks whether to upgrade to dual RTX 4090s or a 4090+3090 combo, given they already have one 4090. They want to run larger 32B models while keeping VRAM for smaller models (TTS, STT, image gen). Claude estimates only 10-20% improvement in TTS, and they worry about VRAM mismatch and long-term CUDA support for the 3090.
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