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

Mac mini M6, 32GB vs AMD Radeon AI PRO R9700, 32GB for local AI

The Radeon AI PRO R9700, 32GB holds 34 of the 50 current models here, and the Mac mini M6, 32GB holds 23. They cost the same, though the Radeon AI PRO R9700, 32GB is priced as the card alone, without the PC around it. On Qwen3.8 27B, the strongest model both hold, the Radeon AI PRO R9700, 32GB is about 4.3× faster: 30 tok/s against 6.9, both estimated from memory bandwidth. The Mac mini M6, 32GB pays for itself sooner, in 82 years against 84 years at 500k tokens a day.

Mac mini M6, 32GBAMD Radeon AI PRO R9700, 32GB
Price$1,299$1,299card only
Memory32 GB32 GB
Usable by the GPU21 GB31 GB
Memory bandwidth170 GB/s640 GB/s
Power under load65 Wstand-in300 W
Models that fit2334
Best model it runsQwen3.8 27BQwen3.8 27B
Speed on that model6.9 tok/s estimated30 tok/s estimated
Pay-back on that modelPays back in 82 yearsPays back in 84 years

The 65 W beside the Mac mini M6, 32GB is a stand-in, not a figure for that machine: the data borrows it from the nearest hardware it does have, and the machine's own page names which and why. So the two figures above are not like for like, and the electricity in its pay-back here is priced from a borrowed number.

Run the numbers on the Mac mini M6, 32GB · or the AMD Radeon AI PRO R9700, 32GB

Jump to: The same money, two different machines · How much use it takes to pay back · What the extra memory buys · The assumptions behind both columns

The same money, two different machines

These two cost the same: $1,299 for the Mac mini M6, 32GB and $1,299 for the Radeon AI PRO R9700, 32GB, card only. Apple makes one and AMD 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. The two are less equal than they look: the Radeon AI PRO R9700, 32GB's price buys the card alone, so read its column as the cost of the part that does the work on top of a machine you already own.

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 Mac mini M6, 32GB pays back sooner at every level up to 4M tokens a day. Above that the AMD Radeon AI PRO R9700, 32GB does.

A day's useMac mini M6, 32GBAMD Radeon AI PRO R9700, 32GB
50ka few chats a day821 years836 years
200klight assistant use205 years209 years
1Ma moderate coding-assistant day41 years42 years
4Mheavy coding with an agent10 years10 years
20Magents running most of the day4.3 yearsits ceiling2.1 years

On Qwen3.8 27B the Mac mini M6, 32GB generates at most 9.47M tokens a day, so its figure at 20M tokens a day is for the most it can do, not for the whole of what was asked.

Run the Mac mini M6, 32GB at 20M tokens a day · or the AMD Radeon AI PRO R9700, 32GB

What the extra memory buys

The AMD Radeon AI PRO R9700, 32GB holds 11 models the Mac mini M6, 32GB cannot at 32k of context. The strongest of them are what the difference in memory actually buys.

ModelWeightsNeeds at 32kOn the AMD Radeon AI PRO R9700, 32GB
Nemotron 3.5 Bolt 74B-A9BHaiku-class22 GB22 GB114 tok/s estimated
Qwen3.6 35B-A3BHaiku-class22 GB23 GB132 tok/s estimated
Gemma 4 31B itHaiku-class20 GB23 GB24 tok/s estimated
Granite 4.2 30BHaiku-class18 GB26 GB21 tok/s estimated
Nemotron 3.5 Lightning 30B-A3BBelow every hosted tier25 GB26 GB127 tok/s estimated
Qwen3-Coder 30B-A3BBelow every hosted tier19 GB22 GB64 tok/s estimated

5 more, on the AMD Radeon AI PRO R9700, 32GB page.

The extra memory buys context as well. Of the 23 current models both machines hold at 32k, 8 run to a longer window on the AMD Radeon AI PRO R9700, 32GB: 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. Qwen3.6 27B reaches 128k there against 32k on the Mac mini M6, 32GB, each the longest window the calculator offers that the machine still holds it at.

The Mac mini M6, 32GB is also head to head with another computer: MacBook Air M5 (13-inch), 16GB · Framework Desktop, 32GB. With the same machine at another memory size: 16GB · 24GB. With the machine it replaced: Mac mini M4, 32GB.

The Radeon AI PRO R9700, 32GB is also head to head with another card: RTX PRO 6000 Blackwell, 96GB · GeForce RTX 5090, 32GB · GeForce RTX 4090, 24GB · GeForce RTX 3090, 24GB · GeForce RTX 4080, 16GB · GeForce RTX 3060, 12GB. With a complete computer: Mac mini M5 Pro, 24GB · Mac Studio M5 Max, 128GB · DGX Spark, 128GB · GMKtec EVO-X2, 128GB · MacBook Air M5 (15-inch), 16GB · MacBook Pro M5 Pro (16-inch), 64GB.

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. The Radeon AI PRO R9700, 32GB is priced as the card alone, so add the PC around it before comparing it with a complete computer. All seven cards here are ranked by what each one holds. Change any of it in the calculator.

More head to head: everything the Mac mini M6, 32GB runs · everything the AMD Radeon AI PRO R9700, 32GB runs · every other match-up · the quickest pay-back at each level of use · every model against the frontier