Apple M2 Ultra~99 tok/s (Q4)

microsoft/VibeVoice-1.5B speed on Apple M2 Ultra

Quantization-specific throughput and VRAM requirements for microsoft/VibeVoice-1.5B running on Apple M2 Ultra.

Speed Snapshot

Topline estimate from compatibility data

Modelmicrosoft/VibeVoice-1.5B

GPUApple M2 Ultra

Q4 speed99 tok/s

Q4 VRAM required3GB

Data Source

Calculation and benchmark status

Speed values come from the compatibility dataset (`estimatedTokensPerSec`) and are sorted by quantization.

For full verdict logic and alternate GPUs, see the canonical compatibility page.

Quantization Speed Table

Quantization	VRAM needed	VRAM available	Speed	Verdict
Q4	3GB	192GB	99 tok/s	✅ Fits
Q8	5GB	192GB	82 tok/s	✅ Fits
FP16	11GB	192GB	43 tok/s	✅ Fits