Local AI build dilemma: 2x used RTX 3090 vs RTX 5080 vs Radeon R9700 for image/video gen
shui95827 · reddit · 2026-10-27
A Reddit user asks for advice on GPUs for local AI image/video generation: two used RTX 3090s (48GB VRAM) cost about the same as one RTX 5080 (16GB) or an AMD Radeon AI PRO R9700 (32GB), on an old i7-9900K Linux box. Key questions: whether multi-GPU actually helps video generation, and if ROCm support for ComfyUI is usable yet.
More from Infra
- General Compute raises $100M Series A to bet on fast inference demand — _akhaliq · 2026-10-28
- Microsoft's custom Maia chips to make up only ~10% of its AI chip spend by early 2027, says Evercore — Beth_Kindig · 2026-10-28
- YC F26 startup Applied Kin quotes pad-mount transformers in 7 weeks as AI-native manufacturer — ycombinator · 2026-10-28
- Cowboy Space unveils 1MW orbital GPU satellite: 5 GPU racks, 132m span, laser links — BenBajarin · 2026-10-28
- Open-source Zilla adds LLM gateway support: preserving API fidelity across providers — jkriket · 2026-10-28
- Together breaks down the MIGHT stack: composable open-source AI from models to MCP tools — togethercompute · 2026-10-28