llamaperf

NVIDIA L4 vs M5 Max 36GB for local LLMs

3 reports on the NVIDIA L4 and 12 on the M5 Max 36GB

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 M5 Max 36GB has 25.8 generation 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 1.5x higher on the M5 Max 36GB (300 GB/s on the NVIDIA L4, 461 on the M5 Max 36GB).

NVIDIA L4
Memory
24GB
Memory bandwidth
300 GB/s
FP16 compute
121 TFLOPS
Reports
3
M5 Max 36GB
Memory
36GB unified
Memory bandwidth
461 GB/s
FP16 compute
not on record
Reports
12

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 L4M5 Max 36GB
Qwen3.8 27B4-bit14.6one runllama.cppcontext not stated25.8one runengine not statedcontext 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 L4M5 Max 36GB
Qwen3.8 27B10.9 t/sQ4_K_M19.7 t/sQ5_K_M
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_S75.9 t/sQ4_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_M19.7 t/sQ5_K_M
Gemma 4 26B · 4B active24.5 t/sQ5_K_S50.2 t/sQ5_K_M
DeepSeek V4.1 Flash 552B · 16B activedoesn't fit at these settingsdoesn't fit at these settings

Change the context, RAM or model in the calculator: NVIDIA L4 · M5 Max 36GB

Every report on each card, with its source: NVIDIA L4 · M5 Max 36GB

More comparisons