Can I Run Nex-N2 on Apple M3 Ultra?

Written by Jakub Rusinowski · Last updated September 8, 2026

Yes, comfortably — you'll have ~272.3 GB of headroom running Nex-N2 Pro at Q4_K_M (239.68875 GB, ~33 tok/s (est.)) with room for up to 256K context.

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Apple Mac Studio M3 Ultra
512 GB VRAM · 60 W board power
2026 prices are volatile — check the current listing.
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Apple M3 Ultra Specs

VRAM512 GB unified memory
Memory Bandwidth819 GB/s

Nex-N2 Pro on the Apple M3 Ultra: VRAM by quantization

QuantVRAM neededFits 512 GB?Max context
F16796.9 GB✗ No
Q8_0424.7 GB✓ Yes128K
Q6_K328.5 GB✓ Yes256K
Q5_K_M284.3 GB✓ Yes256K
Q4_K_M242.6 GB✓ Yes256K
Q3_K_M172.1 GB✓ Yes256K
Q2_K133.4 GB✓ Yes256K

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.

Nex-N2 Sizes That Fit the Apple M3 Ultra

Nex-N2 ProQ4_K_M · 239.68875 GB · ~33 tok/s (est.)
Nex-N2 miniQ4_K_M · 21.13125 GB · ~110 tok/s (est.)
Buy vs. rent Nex-N2
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 Nex-N2 run on the Apple M3 Ultra?

Yes, comfortably — you'll have ~272.3 GB of headroom running Nex-N2 Pro at Q4_K_M (239.68875 GB, ~33 tok/s (est.)) with room for up to 256K context.

Which Nex-N2 variant fits best on the Apple M3 Ultra?

Nex-N2 Pro at Q4_K_M quantization (239.68875 GB), estimated ~33 tokens/sec, up to 256K context.

Every Nex-N2 size on the Apple M3 Ultra

SizeVRAMVerdictSpeed
Nex-N2 Pro239.7 GBRuns~33 tok/s
Nex-N2 mini21.1 GBRuns~110 tok/s

Popular Models on the Apple M3 Ultra

VRAM Tier

Troubleshooting

Buying Guide

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