Sunk Cost sunkcost.ai Data checked 2026-09-03

MacBook Pro M5 Pro (16-inch), 64GB vs Strix Halo Beelink GTR9 Pro, 128GB for local AI

The Beelink GTR9 Pro, 128GB holds 33 of the 39 open models here, and the MacBook Pro M5 Pro (16-inch), 64GB holds 27. The MacBook Pro M5 Pro (16-inch), 64GB costs $350 less. On Qwen3.8 27B, the strongest model both hold, the MacBook Pro M5 Pro (16-inch), 64GB is about 1.2× faster: 12 tok/s against 10, both estimated from memory bandwidth. The MacBook Pro M5 Pro (16-inch), 64GB pays for itself sooner, in 52 years against 57 years at 500k tokens a day.

MacBook Pro M5 Pro (16-inch), 64GBStrix Halo Beelink GTR9 Pro, 128GB
Price$3,999$4,349
Memory64 GB128 GB
Usable by the GPU48 GB96 GB
Memory bandwidth307 GB/s256 GB/s
Power under load140 Wstand-in133 Wstand-in
Models that fit2733
Best model it runsQwen3.8 27BQwen3.8 27B
Speed on that model12 tok/s estimated10 tok/s estimated
Pay-back on that modelPays back in 52 yearsPays back in 57 years

Neither power figure above is measured on the machine beside it. Both are stand-ins borrowed from the nearest hardware the data does have, so the gap between them is not a difference between these two machines. Each machine's page names the figure it borrows and why. Every pay-back figure on this page prices its electricity from these numbers.

Run the numbers on the MacBook Pro M5 Pro (16-inch), 64GB · or the Strix Halo Beelink GTR9 Pro, 128GB

The same money, two different machines

These two cost within $350 of each other: $3,999 for the MacBook Pro M5 Pro (16-inch), 64GB and $4,349 for the Beelink GTR9 Pro, 128GB. Apple makes one and Beelink the other. Every other head-to-head on this site holds a piece of the hardware equal and asks what the price gap buys. This one holds the price, so the row that usually carries the answer is the row the two machines agree on, and everything under it is what the same money buys twice.

How much use it takes to pay back

Everything above is at 500k tokens a day. Pay-back moves with how much you actually run, so here are both machines on Qwen3.8 27B, the strongest model both hold, at the five levels of use the calculator names. The MacBook Pro M5 Pro (16-inch), 64GB pays back sooner at every level of use, so this is not a choice that turns on how hard you work it.

A day's useMacBook Pro M5 Pro (16-inch), 64GBStrix Halo Beelink GTR9 Pro, 128GB
50ka few chats a day518 years569 years
200klight assistant use129 years142 years
1Ma moderate coding-assistant day26 years28 years
4Mheavy coding with an agent6.5 years7.1 years
20Magents running most of the day18 monthsits ceiling24 monthsits ceiling

On Qwen3.8 27B neither machine can generate 20M tokens a day: the MacBook Pro M5 Pro (16-inch), 64GB manages at most 17.1M and the Strix Halo Beelink GTR9 Pro, 128GB at most 14.3M. Both figures on that row are for the most each can do.

Run the MacBook Pro M5 Pro (16-inch), 64GB at 20M tokens a day · or the Strix Halo Beelink GTR9 Pro, 128GB

What the extra memory buys

The Strix Halo Beelink GTR9 Pro, 128GB holds 6 models the MacBook Pro M5 Pro (16-inch), 64GB cannot at 32k of context. The strongest of them are what the difference in memory actually buys.

ModelWeightsNeeds at 32kOn the Strix Halo Beelink GTR9 Pro, 128GB
Ling 3.0 flashHaiku-class78 GB82 GB20 tok/s estimated
Qwen3.5 122B-A10BHaiku-class78 GB79 GB20 tok/s estimated
gpt-oss-120bBelow every hosted tier63 GB65 GB39 tok/s measured
Mistral Small 4 (119B-2603)Below every hosted tier74 GB75 GB32 tok/s estimated
Qwen3-Coder NextBelow every hosted tier48 GB49 GB54 tok/s estimated
Devstral 2 123BBelow every hosted tier75 GB87 GB2.2 tok/s estimated

The extra memory buys context as well. Of the 27 models both machines hold at 32k, 4 run to a longer window on the Strix Halo Beelink GTR9 Pro, 128GB: the weights are a fixed size and the KV cache is not, so what the weights leave spare is what a longer context grows into. Gemma 4 31B it reaches 256k there against 128k on the MacBook Pro M5 Pro (16-inch), 64GB, each the longest window the calculator offers that the machine still holds it at.

The MacBook Pro M5 Pro (16-inch), 64GB is also head to head with another computer: Mac mini M5 Pro, 24GB · Mac Studio M5 Max, 128GB · DGX Spark, 128GB · GMKtec EVO-X2, 128GB · MacBook Air M5 (15-inch), 16GB · Minisforum MS-S1 Max, 128GB. With a graphics card: RTX PRO 6000 Blackwell, 96GB · Radeon AI PRO R9700, 32GB. With the same machine at another memory size: 24GB · 48GB.

The Beelink GTR9 Pro, 128GB is also head to head with another computer: Framework Desktop, 128GB.

The assumptions behind both columns

Both columns use the same usage: 500k tokens a day at 15:1 input to output, 32k of context, $0.17 per kWh, and today's API prices held flat. Speeds marked estimated are worked out from memory bandwidth rather than measured, and pay-back scales with them. Change any of it in the calculator.

More head to head: everything the MacBook Pro M5 Pro (16-inch), 64GB runs · everything the Strix Halo Beelink GTR9 Pro, 128GB runs · every other match-up · the quickest pay-back at each level of use · every model against the frontier