Can Arc B580 12GB run Ornith-1.0-35B?

Intel · 12 GB GDDR6 · 456 GB/s bandwidth · DeepReinforce · 35.0B (active 3.0B) · MoE · model ctx up to 256K

No — Ornith-1.0-35B at Q4 needs ≈ 20.55 GB even at 4K context, beyond the Arc B580 12GB's 12 GB GDDR6. It would only run with heavy CPU/disk offload. Decode at Q4/8K: ≈ 91.5 tok/s (estimated, batch 1). FP16 needs ≈ 71.6 GB — does not fit on this card. Estimates come from memory-bandwidth math; rows tagged measured override estimates. Relative ranking is more reliable than absolute tok/s. Methodology.

Fit & speed by quant and context

Quant	Context	VRAM needed	Fits?	tok/s (decode)
Q4	4K	20.55 GB	No	94.2 est.
Q4	8K default	20.85 GB	No	91.5 est.
Q4	32K	22.65 GB	No	77.6 est.
FP16	4K	71.3 GB	No	—
FP16	8K default	71.6 GB	No	—
FP16	32K	73.4 GB	No	—

Fits = weights + KV(ctx) + 1 GB overhead ≤ 95% of VRAM. Measured anchors are context-agnostic; the fit verdict is recomputed per context. A missing tok/s means the model is far beyond this card (offload-only territory).

VRAM breakdown at 8K context

Quant	Weights	KV cache	Overhead	Total needed	Arc B580 12GB VRAM
Q4	19.25 GB	0.6 GB	1 GB	20.85 GB	12 GB
FP16	70.0 GB	0.6 GB	1 GB	71.6 GB	12 GB

Other GPUs that run Ornith-1.0-35B

• B200 192GB SXM — ≈1697.0 tok/s Q4 est.
• MI300X 192GB — ≈1124.2 tok/s Q4 est.
• H200 141GB SXM5 — ≈1018.2 tok/s Q4 est.
• H100 80GB SXM5 — ≈710.6 tok/s Q4 est.
• Gaudi 3 128GB — ≈694.9 tok/s Q4 est.
• A100 80GB SXM4 — ≈432.5 tok/s Q4 est.
• RTX 5090 32GB — ≈380.1 tok/s Q4 est.
• RTX 4090 24GB — ≈213.8 tok/s Q4 est.

All GPUs for Ornith-1.0-35B →

Other models for the Arc B580 12GB

• MiniCPM5-1B — ≈268.7 tok/s Q4 est.
• Qwen3.5-2B — ≈145.1 tok/s Q4 est.
• Qwen3-4B-Instruct-2507 — ≈72.5 tok/s Q4 est.
• Qwen3-4B-Thinking-2507 — ≈72.5 tok/s Q4 est.
• NVIDIA-Nemotron-3-Nano-4B-BF16 — ≈72.5 tok/s Q4 est.
• gemma-4-E2B-it — ≈56.9 tok/s Q4 est.
• Llama-3.2-3B-Instruct — ≈47.4 tok/s Q4 measured
• Mistral-7B-Instruct-v0.3 — ≈40.3 tok/s Q4 est.

All models on the Arc B580 12GB →