- 128GB unified memory — holds the entire model on one machine, with no splitting
- 614GB/s memory bandwidth — determines how fast answers are generated
- 40-core GPU and 16-core Neural Engine — handle prompt processing
- Best model it can run: Qwen3.8-27B (8-bit) · AA score 20.1 (Artificial Analysis scale)
Which AI models can the Mac Studio M5 Max 128GB run?
Memory decides which model fits on the machine; the AA score shows how smart that model is; bandwidth decides how fast it answers. The selected configuration has 128GB of memory and 614GB/s of bandwidth.
| Memory | Available to the model | Best model (AA score) | What it can do |
|---|---|---|---|
| 36GB | ~27GB | Qwen3.8-27B · AA score 20.1 | Q&A over internal documents, summarizing, drafting — small teams |
| 48GB | ~36GB | Qwen3.8-27B · AA score 20.1 | Q&A over internal documents, summarizing, drafting — small teams |
| 64GB | ~48GB | Qwen3.8-27B (8-bit) · AA score 20.1 | Larger models, longer context, serving many concurrent users |
| 96GB | ~72GB | Qwen3.8-27B (8-bit) · AA score 20.1 | Larger models, longer context, serving many concurrent users |
| 128GB | ~96GB | Qwen3.8-27B (8-bit) · AA score 20.1 | Very large models, or several models side by side on one machine |
| 256GB | ~192GB | GLM-5.3-Flash · AA score 27.8 | Very large models, or several models side by side on one machine |
| 512GB | ~384GB | GLM-5.3-Flash · AA score 27.8 | Very large models, or several models side by side on one machine |
AA score: Artificial Analysis Intelligence Index v5.0, checked 3 Nov 2026 — higher means smarter; the v5 scale is harder, so scores are lower than before. For comparison, Claude Opus 5.5 scores 58.4 and the leader, Gemini 4 Carbon, scores 59.4. Response speed and the number of simultaneous users depend on the GPU and memory bandwidth; Namtech tests on real hardware before advising.
Who the 128GB configuration is for
Small teams getting started with on-premise AI
Up to 48GB · your 128GB configuration
Q&A over your internal documents, summarizing and drafting for a small group of users. A good fit if your business is new to AI and wants its data to stay in the office.
Many users, larger models
64–96GB · your 128GB configuration
Larger models and longer context (multi-page files and contracts), serving many people asking questions on the same internal network.
Very large models or multiple models
128GB and up · your 128GB configuration
Run very large models, or several models side by side on one machine (for example, one model for Q&A and one dedicated to document processing).
There is no fixed user count per tier: it depends on the model, prompt length and how many people ask at once. Namtech measures against your real workload before you commit to a configuration.
Tech specs
| Chip | Apple M5 Max |
|---|---|
| CPU | 18 cores |
| GPU | 40 cores |
| Neural Engine | 16 cores |
| Unified memory | 128GB |
| Memory bandwidth | 614GB/s |
| Storage | 512GB |
| Ports | 4× Thunderbolt 5 (USB-C, up to 120Gb/s, DisplayPort 2.1) · 2× USB-A (up to 5Gb/s) · 1× HDMI 2.1 · 1× 10Gb Ethernet (Nbase-T, RJ-45) · 3.5 mm headphone jack · Front: SDXC card slot (UHS-II) + 2× USB-C 10Gb/s (M5 Max) or 2× Thunderbolt 5 (M5 Ultra) · Wi-Fi 7 (802.11be), Bluetooth 6, Thread — Apple N1 chip |
| Display support | M5 Max: up to 5 external displays · M5 Ultra: up to 8 external displays (6K@60Hz) |
| Dimensions | Height 9.5 cm · Width 19.7 cm · Depth 19.7 cm |
| Weight | 2.7 kg |
| Power | 100–240V AC, maximum continuous power 480W · operating temperature 10–35°C |
| In the box | Mac Studio and power cord |
Specifications as published by Apple, updated September 24, 2026. Prices on this page include VAT.
Other configurations
Accessories for Mac Studio and Mac mini
Genuine Apple keyboards, mice, trackpads, cables and Studio Display monitors compatible with Mac Studio and Mac mini. You can order them together with your Mac.
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Original price
VAT included
Key specifications
What’s in the box
Compatibility
Details as published by Apple · checked September 24, 2026
Buying from Namtech vs buying directly from Apple Store
| Buy from Namtech | Buy directly from Apple Store | |
|---|---|---|
| Payment | Only a 20% deposit when the order is confirmed; the remaining 80% is paid before delivery | Full payment when ordering, even if you wait weeks for stock |
| Cancellation | Cancel before the order is confirmed: free of charge | Cancel once the order is being prepared for shipping: 20% restocking fee |
| AI advice and setup | Configuration advice based on the AI models you plan to run, help installing MLX, Ollama, LM Studio | Not offered |
| Delivery | Delivered to your door, factory-sealed; you open the seal yourself | Free delivery |
| Invoice | VAT invoice issued by Công ty Cổ phần Trạm Năng Lượng Số | Apple invoice |
| Warranty and returns | Per Apple’s policy | Per Apple’s policy |
Mac Studio M5 Max 18/40 128GB FAQ
Which AI models can the Mac Studio M5 Max 18/40 128GB run?
The best model the 128GB configuration can run is Qwen3.8-27B (8-bit), AA score 20.1. Qwen3.8-27B at 8-bit takes about 29.5 GB, Apache 2.0 licence. AA score: Artificial Analysis Intelligence Index v5.0, checked 3 Nov 2026 — higher means smarter; the v5 scale is harder, so scores are lower than before. For comparison, Claude Opus 5.5 scores 58.4 and the leader, Gemini 4 Carbon, scores 59.4. Response speed and the number of simultaneous users depend on the GPU and memory bandwidth; Namtech tests on real hardware before advising.
What does the AA score of 20.1 for Qwen3.8-27B mean?
The AA score is the Artificial Analysis Intelligence Index v5.0 — a combined measure of how smart an AI model is; higher means smarter. The v5 scale is harder, so scores are lower than on v4. Qwen3.8-27B scores 20.1; for comparison, Claude Opus 5.5 scores 58.4 and the leader, Gemini 4 Carbon, scores 59.4 (Artificial Analysis Intelligence Index v5.0, checked 3 Nov 2026). Namtech shows the model name and this score instead of a model size, because a model fitting in memory does not mean it is smart enough for the job.
How many users is the 128GB configuration suitable for?
Very large models or multiple models. Run very large models, or several models side by side on one machine (for example, one model for Q&A and one dedicated to document processing). The actual number of concurrent users depends on the model and prompt length, so Namtech measures on real hardware against your workload before you commit to a configuration.
How much does the Mac Studio M5 Max 18/40 128GB cost?
157,230,000₫, VAT included, with the default 512GB SSD. The machine is sold and VAT-invoiced by Công ty Cổ phần Trạm Năng Lượng Số; Namtech advises on the configuration for the models you need to run. Storage can be upgraded from 512GB to 8TB, with the price updating instantly in the configurator at the top of the page.
Can I upgrade the RAM after purchase?
No. Mac Studio memory is built into the chip, so you must choose the right amount when you order. That is why you should work out the models you plan to run before you decide.
Should I choose 128GB or step up to 256GB?
Choose 128GB if Qwen3.8-27B (8-bit) · AA score 20.1 is enough for the job. The Mac Studio M5 Ultra 30CPU 64GPU 256GB 1TB runs GLM-5.3-Flash · AA score 27.8, priced at 300,000,000₫ (142,770,000₫ more), VAT included. Since RAM cannot be upgraded after purchase, choose the next tier up if you are unsure.