The RTX A2000 12GB only has 12GB VRAM. Claude Opus 4.5 needs ~121.7GB (estimate). Time to rent or upgrade.
Estimate · Q4_K_M · 4k context · batch 1. For dense 7B–70B this sits ~5–8% above the Q4_K_M GGUF file. Not peak runtime VRAM and not a measured bench.
Need more VRAM?
Rent cloud GPUs with 121.7GB+ VRAM to run Claude Opus 4.5, or upgrade hardware.
This GPU is short by ~109.7GB VRAM for Claude Opus 4.5 at Q4.
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MSRP: $625