BBrainOutput
Apple·SoCExpected class

Apple M4 Ultra (expected): Specs & Local-AI Compatibility

Anticipated top Apple SoC — large unified memory. Expected class, verify.

Some details here are provisional (Expected class). Treat specs as approximate and verify against the manufacturer before relying on them or purchasing.

Specs

Memory
256 GB unified
Memory type
Unified LPDDR5X
Bandwidth
1,092 GB/s
Approx FP16
to verify
Architecture
Apple M4 Ultra
Process
TSMC N3E
Power
to verify
Launch
to verify

Models this chip can run

Open models graded for a single Apple M4 Ultra (expected), best fit first.

  • Gemma 2 27B
    Gemma · ~27B · 8K ctx · Gemma Terms of Use

    Fits at FP16 (~54GB) with ~125.2GB headroom — about 3 concurrent instances.

    FP16 · ~54GBRuns well
  • Gemma 3 27B
    Gemma 3 · ~27B · 128K ctx · Gemma Terms of Use

    Fits at FP16 (~54GB) with ~125.2GB headroom — about 3 concurrent instances.

    FP16 · ~54GBRuns well
  • Mistral Small 24B
    Mistral · ~24B · 32K ctx · Apache-2.0

    Fits at FP16 (~48GB) with ~131.2GB headroom — about 3 concurrent instances.

    FP16 · ~48GBRuns well
  • DeepSeek-Coder V2 (class)
    DeepSeek · ~16B · 128K ctx · DeepSeek License

    Fits at FP16 (~33GB) with ~146.2GB headroom — about 5 concurrent instances.

    FP16 · ~33GBRuns well
  • StarCoder2 15B
    StarCoder · ~15B · 16K ctx · BigCode OpenRAIL-M

    Fits at FP16 (~30GB) with ~149.2GB headroom — about 5 concurrent instances.

    FP16 · ~30GBRuns well
  • Qwen2.5 14B
    Qwen · ~14B · 128K ctx · Apache-2.0

    Fits at FP16 (~30GB) with ~149.2GB headroom — about 5 concurrent instances.

    FP16 · ~30GBRuns well
  • Qwen3 14B
    Qwen · ~14B · 128K ctx · Apache-2.0

    Fits at FP16 (~30GB) with ~149.2GB headroom — about 5 concurrent instances.

    FP16 · ~30GBRuns well
  • Phi-3 Medium (14B)
    Phi · ~14B · 128K ctx · MIT

    Fits at FP16 (~28GB) with ~151.2GB headroom — about 6 concurrent instances.

    FP16 · ~28GBRuns well

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