Can a NVIDIA GB300 Grace Blackwell (288GB HBM + 480GB) run Hunyuan Hy3 (MoE)?

Yes — Hunyuan Hy3 (MoE) runs at Q8_0 (317.7 GB) at about 48–71 tok/s on a NVIDIA GB300 Grace Blackwell (288GB HBM + 480GB).

How much memory does Hunyuan Hy3 (MoE) need?

Hunyuan Hy3 (MoE) needs about 108.8 GB at 4K context at its smallest quantization. A NVIDIA GB300 Grace Blackwell (288GB HBM + 480GB) has 288.0 GB.

Yes — Hunyuan Hy3 (MoE) runs on a NVIDIA GB300 Grace Blackwell (288GB HBM + 480GB) at Q8_0

Yes — it runs great.

Runs great

Best fit: Hunyuan Hy3 (MoE) at Q8_0 · 317.7 GB weights · 48–71 tok/s on a NVIDIA GB300 Grace Blackwell (288GB HBM + 480GB).

Arena Text Overall · style-controlled

1,454Q8_0 untested

hy3 · published configuration reference · Q8_0 not tested

Arena Text Overall (style-controlled), exact published entry hy3, 2026-10-08: reference rating 1,454.2. Published confidence bounds 1,447.9–1,460.5. 11,284 votes. Published hy3 configuration reference. Reasoning mode is not disclosed by the Arena dataset. Tested precision, runtime and sampling settings are not disclosed in this dataset. Selected Q8_0 has not been measured by this Arena entry. No quantization quality adjustment is applied.

Snapshot published 2026-10-08 · snapshot imported 2026-10-11 UTC · validated last-good data · manual refresh

Arena leaderboard dataset · Arena / lmarena-ai, Arena Leaderboard Dataset (CC BY 4.0). Selected Text Overall style-controlled rows; field names adapted, ratings unchanged. · dataset CC BY 4.0 · revision e16f90232986

Total memory at 4K context: 319.8 GB; Weights + KV cache + runtime overhead
Estimated generation: 48–71 tok/s
Estimated first token: ~0.4s

Every quantization on this machine

On small screens, each quant lists every metric below its name. On wider screens, scroll sideways for total memory, speed and fit. Keyboard: focus the table, then use the arrow keys. Quant names stay visible.

Hunyuan Hy3 (MoE) quantizations on NVIDIA GB300 Grace Blackwell (288GB HBM + 480GB), estimated at 4K context. Weights and total memory are shown separately.
Quant	Weights	Total memory	Speed	Fit
Q2_K	106.7 GB	108.8 GB	237–355 tok/s	Runs great
Q3_K_M	137.6 GB	139.7 GB	218–327 tok/s	Runs great
Q4_K_M	182.2 GB	184.3 GB	195–293 tok/s	Runs great
Q5_K_M	212.8 GB	215.0 GB	182–273 tok/s	Runs great
Q6_K	257.3 GB	259.4 GB	165–247 tok/s	Runs great
Q8_0	317.7 GB	319.8 GB	48–71 tok/s	Runs great

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