llamaperf

M6 32GB vs AMD Radeon 780M for local LLMs

2 reports on the M6 32GB and 5 on the AMD Radeon 780M

Which is faster for local LLMs?

On Gemma 4 26B · 4B active at 4-bit, the M6 32GB runs at 52.2 tokens per second (one run) and the AMD Radeon 780M at 25.0 (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 42% higher on the M6 32GB (171 GB/s on the M6 32GB, 120 on the AMD Radeon 780M).

M6 32GB
Memory
32GB unified
Memory bandwidth
171 GB/s
FP16 compute
not on record
Reports
2
AMD Radeon 780M
Memory
shared memory unified
Memory bandwidth
not on record
FP16 compute
not on record
Reports
5

Measured on both

Median tokens per second 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 quant level. Engines and context lengths can still differ between the runs. How to read these

ModelM6 32GBAMD Radeon 780M
Gemma 4 26B · 4B active4-bit52.2one run25.0one run

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.

ModelM6 32GBAMD Radeon 780M
Gemma 4 26B · 4B active23.2 t/sQ4_K_Mnot in the calculator yet
Qwen3.8 27B10.5 t/sQ4_K_Snot in the calculator yet
Qwen3.8 125B · 6B activedoesn't fit at these settingsnot in the calculator yet
DeepSeek V4 Flash 284B · 13B activedoesn't fit at these settingsnot in the calculator yet
Qwen3.6 35B · 3B active38.2 t/sQ3_K_Mnot in the calculator yet
Qwen3.6 27B10.5 t/sQ4_K_Snot in the calculator yet
DeepSeek V4.1 Flash 552B · 16B activedoesn't fit at these settingsnot in the calculator yet

Change the context, RAM or model in the calculator: M6 32GB · AMD Radeon 780M

Every report on each card, with its source: M6 32GB · AMD Radeon 780M

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