llamaperf

NVIDIA L4 vs M1 Max 32GB for local LLMs

3 reports on the NVIDIA L4 and 2 on the M1 Max 32GB

Which is faster for local LLMs?

On Qwen3.8 27B at 4-bit, the NVIDIA L4 has 14.6 generation tokens/s (one run); the M1 Max 32GB has 15.8 generation tokens/s (one run); prompt processing 81.8 tokens/s (one run). Those are community reports whose engines and settings differ, so the gap is a rough sign, not a controlled measure of the two cards. Memory bandwidth, which caps how fast a card can write, is 37% higher on the M1 Max 32GB (300 GB/s on the NVIDIA L4, 410 on the M1 Max 32GB).

NVIDIA L4
Memory
24GB
Memory bandwidth
300 GB/s
FP16 compute
121 TFLOPS
Reports
3
M1 Max 32GB
Memory
32GB unified
Memory bandwidth
410 GB/s
FP16 compute
10.4 TFLOPS
Reports
2

Measured on both

Generation and prompt processing speeds from plain runs (one device, one request, no speculative decoding, the whole model in the device's memory) of the same model size at the same bit class. Each side shows the engines and reported context behind its median. Context can mean a configured window or prompt depth, so these are community comparisons with differing settings. How to read these

ModelNVIDIA L4M1 Max 32GB
Qwen3.8 27B4-bit14.6one runllama.cppcontext not stated15.8one runPP 81.8 (one run)MLXcontext not stated

Estimated by the calculator

The quant the calculator recommends for each card and its estimated speed at a 32,768-token context with 32 GB of system RAM, from memory bandwidth and the model's shape. Where a model was also measured above, the measurement wins.

ModelNVIDIA L4M1 Max 32GB
Qwen3.8 27B10.9 t/sQ4_K_M20.1 t/sQ4_K_S
Qwen3.8 125B · 6B active16.4 t/sQ2_K, experts in RAMdoesn't fit at these settings
Qwen3.6 35B · 3B active38.5 t/sQ4_K_S73.2 t/sQ3_K_M
DeepSeek V4 Flash 284B · 13B activedoesn't fit at these settingsdoesn't fit at these settings
Qwen3.6 27B10.9 t/sQ4_K_M20.1 t/sQ4_K_S
Gemma 4 26B · 4B active24.5 t/sQ5_K_S44.3 t/sQ4_K_M
GLM-5.3 320B · 18B activedoesn't fit at these settingsdoesn't fit at these settings

Change the context, RAM or model in the calculator: NVIDIA L4 · M1 Max 32GB

Every report on each card, with its source: NVIDIA L4 · M1 Max 32GB

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