Can RX 7900 XT 20GB run qwen35b-a3b-fable-sft-abliterated?

AMD · 20 GB GDDR6 · 800 GB/s bandwidth · hotdogs · 34.7B (active 3.0B) · MoE · model ctx up to 32K

ROCM

No — qwen35b-a3b-fable-sft-abliterated at Q4 needs ≈ 20.39 GB even at 4K context, beyond the RX 7900 XT 20GB's 20 GB GDDR6. It would only run with heavy CPU/disk offload. Decode at Q4/8K: ≈ 451.9 tok/s (estimated, batch 1). FP16 needs ≈ 71.0 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	20.39 GB	No	465.3 ± est.
Q4	8K default	20.69 GB	No	451.9 ± est.
Q4	32K	22.49 GB	No	382.5 ± est.
FP16	4K	70.7 GB	No	10.6 ± est.
FP16	8K default	71.0 GB	No	10.6 ± est.
FP16	32K	72.8 GB	No	10.0 ± est.

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	RX 7900 XT 20GB VRAM
Q4	19.09 GB	0.6 GB	1 GB	20.69 GB	20 GB
FP16	69.4 GB	0.6 GB	1 GB	71.0 GB	20 GB

Other GPUs that run qwen35b-a3b-fable-sft-abliterated

• 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 qwen35b-a3b-fable-sft-abliterated →

Other models for the RX 7900 XT 20GB

• MiniCPM5-1B — ≈471.4 tok/s Q4 est.
• Qwen3.5-2B — ≈254.5 tok/s Q4 est.
• DeepSeek-R1-0528-Qwen3-8B-layer-mix-bpw-3.8-mlx — ≈221.3 tok/s Q4 est.
• GLM-4.7-Flash — ≈169.7 tok/s Q4 est.
• Qwen3-30B-A3B-Instruct-2507 — ≈169.7 tok/s Q4 est.
• Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF16 — ≈169.7 tok/s Q4 est.
• gpt-oss-20b — ≈141.4 tok/s Q4 est.
• gemma-4-26B-A4B-it — ≈134.0 tok/s Q4 est.

All models on the RX 7900 XT 20GB →