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Apple M2 Ultra (192GB)

The Apple M2 Ultra (192GB) has 192 GB VRAM and 800 GB/s memory bandwidth. It can run 64 of our 70 tracked models natively in VRAM at 8k context.

With 192 GB LPDDR5, the Apple M2 Ultra (192GB) is a workstation-tier GPU that can run 64 models natively. It handles 70B-class models at Q4 quantization.

The Apple M2 Ultra (192GB) is the base configuration of Apple's M2 Ultra chip, found in the Mac Pro and Mac Studio. Its 192GB of unified LPDDR5 memory at 800 GB/s can hold a 70B model in full Q4 quantization entirely in memory. While the M4 Ultra brings a 37% bandwidth improvement, the M2 Ultra remains fully supported by MLX and llama.cpp and is a capable long-term platform for local LLM inference at scale.

Apple M2 Ultra (192GB): Base M2 Ultra with 192GB at 800 GB/s.

70B at Q4 native ~11-15 t/s. Llama 405B at 1-bit (IQ1_M) ~2.3 t/s, 2-bit (Q2_K) for short sequences.

Same as 384GB. K-quants strongly preferred over IQ-quants.

VendorApple
ArchitectureApple M2 Ultra
CPU cores24 (16P + 8E)
VRAM192 GB (unified)
Memory typeLPDDR5
Memory bandwidth800 GB/s
Compute backendMETAL
TierWorkstation
Released2023
Models (native)64 / 70
Models (offload)0 / 70
Software: MLX gives the best performance on Apple Silicon; llama.cpp Metal backend is a solid alternative. Both are well-supported by Ollama.

Popular models for this GPU

Models this GPU runs natively in VRAM (64)

Too large for this GPU (6)

Compare Apple M2 Ultra (192GB) with other GPUs

Frequently asked questions

How much VRAM does the Apple M2 Ultra (192GB) have?
The Apple M2 Ultra (192GB) has 192 GB of LPDDR5 with 800 GB/s memory bandwidth (unified system memory, shared between CPU and GPU).
What is the Apple M2 Ultra (192GB) best for?
With 192 GB of VRAM, the Apple M2 Ultra (192GB) is a server-class GPU designed for running the largest open-weight models (70B–405B) at high quantization with ample context.
What LLMs can the Apple M2 Ultra (192GB) run locally?
The Apple M2 Ultra (192GB) can run 64 of the 70 open-weight models tracked by CanItRun natively in VRAM at 8k context. Top options include: Llama 3.3 70B Instruct at BF16, Llama 3.1 8B Instruct at FP32, Llama 3.2 3B Instruct at FP32.
Can the Apple M2 Ultra (192GB) run Llama 3.3 70B Instruct?
Yes. The Apple M2 Ultra (192GB) runs Llama 3.3 70B Instruct natively in VRAM at BF16 quantization, achieving approximately 5.7 tokens per second.
Can the Apple M2 Ultra (192GB) run Qwen 3.6 27B?
Yes. The Apple M2 Ultra (192GB) runs Qwen 3.6 27B natively in VRAM at FP32 quantization, achieving approximately 7.4 tokens per second.
Can the Apple M2 Ultra (192GB) run Llama 3.1 8B Instruct?
Yes. The Apple M2 Ultra (192GB) runs Llama 3.1 8B Instruct natively in VRAM at FP32 quantization, achieving approximately 25 tokens per second.