llamaperf

M3 Ultra 256GB vs RTX 3090

For running local LLMs · 87 reports across 13 models

Side A
M3 Ultra 256GB
Vendor
apple
VRAM
256GB
Memory
Unified
Side B
RTX 3090
Vendor
nvidia
VRAM
24GB
Memory
Discrete

Highest reported generation speed by model family

These maxima come from different community setups. Model size, quantization, GPU count, offloading and concurrency may differ. They do not establish which GPU is faster for the same workload. Check the comparison conditions →

ModelM3 Ultra 256GBRTX 3090
Qwen3.8up to 2400B382.0n=51
Qwen3.6up to 35B170.7n=13
DeepSeek V4 Flashup to 285B60.0n=9
GLM-5.3up to 321B37.4n=155.0n=2
GLM-5.2up to 744B7.3n=2
Qwen2.5up to 32B70.0n=2
DeepSeek R12.0n=1
DeepSeek V3n=1
DeepSeek V4up to 284B15.0n=1
GLM-4.5-Airup to 106Bn=1
Minimax M317.3n=1
Museup to 30B94.0n=1
Qwen3up to 235B7.5n=1

More comparisons