$100 of used RX 580s runs Qwen 27B at 7.39 t/s on DDR3 platform
Whole_Alternative_18 · reddit · 2026-08-17
A Reddit user built a $100 rig from two used RX 580 8GB cards (16GB VRAM total) on an old DDR3 workstation board and runs Qwen 27B at Q3KM quantization, getting 7.4 t/s generation (14 t/s processing).
They admit it's far from comfortable: slow speed, painful long-context input, and unsuitable for MTP-style models. But it's extremely cheap—even cheaper than running on system RAM—making it a viable last-resort option for tight budgets.
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