what/llm/can/i/run
gpus/apple/m3-ultra-256gb

M3 Ultra 256GB

Released 2025-03-12 · Street $7,099
vram
256 GB
unified mem
bandwidth
800
GB/s
models fit
20
top · FP16
power
120 W
low

Spec sheet · top pick

Hardware spec
M3 Ultra 256GB
Apple · Apple Silicon · M3
vram
256 GB unified
bandwidth
800 GB/s
tdp
120 W
released
2025-03-12
msrp
$7,099
street
~$7,099
★ Sweet spot for this card
gemma 3 27b
FP16 · GGUF · 57.2 GB
bench50.6 · conf A
vram57.2 / 256 GB
speed14 tok/s
Best benchmark per GB of VRAM in your tier. FP16wastes <3% quality vs FP16, leaves headroom for 32k context.
Full model inspect →

Top 10 models on this GPU

#modelquantvramtok/sbench ↓fit
01gemma 3 27bFP1657.2 GB1450.6Great
02Qwen2.5 Coder 32BFP1667.7 GB1248.8Great
03Llama 4 Maverick 17B 128EQ4_K_M210.5 GB459.3Great
04Gemma 2 27BFP1657.2 GB1446.2Great
05Qwen3 32BFP1667.7 GB1240.0Great
06Gemma 2 9BFP1619.4 GB4135.0Great
07Gemma 3 12BFP1625.7 GB3131.3Great
08deepseek r1 distill llama 70bFP16147.5 GB551.7Great
09deepseek r1 distill qwen 32bFP1667.7 GB1233.3Great
10Gemma 3 4BFP168.9 GB9015.1Great
Showing 10 of 20 models that fit · see full ranked list →

Upgrade options

★ Best value
+M3 Ultra 512GB
512 GB · ~$9,499 · +$2,400 over M3 Ultra 256GB
Unlocks +2 models not in current rank
See M3 Ultra 512GB
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