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Can RTX 5080 16GB run gemma-4-26B-A4B-it?

NVIDIA · 16 GB GDDR7 · 960 GB/s bandwidth · Google · 25.2B (active 3.8B) · MoE · model ctx up to 256K

✅ Yes — RTX 5080 16GB (16 GB) can run gemma-4-26B-A4B-it at Q4 (8K)
VRAM: 15.42 GB needed of 16 GB
Speed: ~215.8 tok/s (estimated)
TT · Tight FitComposite score: VRAM headroom × 0.5 + tok/s speed × 0.5. Q4 @ 8K context.
CUDA
Tight fit — try smaller model or shorter contextTight fit — try smaller model or shorter contextTight fit — try smaller model or shorter context
Estimates from memory-bandwidth formula; rows marked "measured" override. Methodology.

Fit & speed by quant and context

QuantContextVRAM neededFits?tok/s (decode)
Q44K15.27 GBTight215.8 ± est.
Q48K default15.42 GBTight215.8 ± est.
Q432K16.36 GBNo430.1 ± est.
FP164K51.56 GBNo12.1 ± est.
FP168K default51.71 GBNo12.1 ± est.
FP1632K52.65 GBNo11.6 ± 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

QuantWeightsKV cacheOverheadTotal neededRTX 5080 16GB VRAM
Q414.11 GB0.31 GB1 GB15.42 GB16 GB
FP1650.4 GB0.31 GB1 GB51.71 GB16 GB

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