Can I Run GLM-6 on Apple M3 Ultra?

Autor: Jakub Rusinowski · Ostatnia aktualizacja: 12 lipca 2026

Yes, comfortably — you'll have ~297.7 GB of headroom running GLM-6 355B-A32B at Q4_K_M (214.33125 GB, ~20 tok/s (est.)) with room for up to 128K context.

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Apple Mac Studio M3 Ultra
512 GB VRAM · 60 W board power
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Apple M3 Ultra Specs

VRAM512 GB unified memory
Memory Bandwidth819 GB/s

GLM-6 355B-A32B on the Apple M3 Ultra: VRAM by quantization

QuantVRAM neededFits 512 GB?Max context
F16712.8 GB✗ No
Q8_0380 GB✓ Yes128K
Q6_K293.9 GB✓ Yes128K
Q5_K_M254.5 GB✓ Yes128K
Q4_K_M217.2 GB✓ Yes128K
Q3_K_M154.2 GB✓ Yes128K
Q2_K119.6 GB✓ Yes128K

VRAM needed assumes a 4K-token context with an f16 KV cache; “Max context” is the largest window that still fits in 512 GB of unified memory. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.

GLM-6 Sizes That Fit the Apple M3 Ultra

GLM-6 355B-A32BQ4_K_M · 214.33125 GB · ~20 tok/s (est.)
GLM-6 9BQ4_K_M · 5.43375 GB · ~61 tok/s (est.)
Buy vs. rent GLM-6
Buy the GPU
~$3,999
Apple M3 Ultra · MSRP
Rent by the hour
from $23.12/hr
8× H100 (640 GB) class

At 2 hrs/day, buying (~$3,999) beats renting at $23.12/hr after about 3 months.

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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.

FAQ

Will GLM-6 run on the Apple M3 Ultra?

Yes, comfortably — you'll have ~297.7 GB of headroom running GLM-6 355B-A32B at Q4_K_M (214.33125 GB, ~20 tok/s (est.)) with room for up to 128K context.

Which GLM-6 variant fits best on the Apple M3 Ultra?

GLM-6 355B-A32B at Q4_K_M quantization (214.33125 GB), estimated ~20 tokens/sec, up to 128K context.

Every GLM-6 size on the Apple M3 Ultra

SizeVRAMVerdictSpeed
GLM-6 355B-A32B214.3 GBRuns~20 tok/s
GLM-6 9B5.4 GBRuns~61 tok/s

Popular Models on the Apple M3 Ultra

VRAM Tier

Troubleshooting

Buying Guide

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