Can You Run Gemma 4 on a Mac Studio (96GB)?
Yes — best fit is Gemma 4 31B at BF16 (16-bit) (~58.3GB) ✅ Comfortable, using 91GB of usable memory on a 96GB Mac Studio.
Every Gemma 4 model on this configuration
| Model | Best quant | Size | Status |
|---|---|---|---|
| Gemma 4 E2B | BF16 (16-bit) | ~8 GB | ✅ Comfortable |
| Gemma 4 E4B | BF16 (16-bit) | ~15 GB | ✅ Comfortable |
| Gemma 4 12B | BF16 (16-bit) | ~26.7 GB | ✅ Comfortable |
| Gemma 4 26B A4B | BF16 (16-bit) | ~48 GB | ✅ Comfortable |
| Gemma 4 31B | BF16 (16-bit) | ~58.3 GB | ✅ Comfortable |
How we got this verdict
96 - 5 = 91GB usable (macOS and background processes reserve roughly 5 GB of unified memory).
Because Mac Studio has enough unified memory to spare, 31B fits at BF16 (16-bit)— a higher-precision quant than most setups get. You don't need the 4-bit QAT build here, though it's still a safe download if you want a smaller file for a second model running alongside it.
Going up to 128GB (128GB) doesn't change the top recommendation — 31B is still the best fit, just with more headroom.
Real-world notes for this configuration
96GB has typically been an Ultra-chip configuration on the Mac Studio — the Max chip's memory options don't usually reach this high. The Ultra chip is Apple's approach to roughly doubling the Max chip's capabilities by joining two Max dies together, which is also why its memory bandwidth runs meaningfully higher than any other Mac configuration below it.
- ⚠Ultra-chip Studios are a specific, premium SKU — confirm the listing explicitly states Ultra rather than assuming from memory size alone, since Apple's naming across marketing materials can be easy to skim past.
Try a different configuration
Best fit: Gemma 4 31B · BF16 (16-bit) · ~58.3 GB ✅ Comfortable
FAQ
Can a Mac Studio (96GB) run the 31B flagship model?
Yes, comfortably — Gemma 4 31B fits at BF16 (16-bit) (~58.3GB), using 91GB of usable memory on this configuration.
What's the best Gemma 4 model for a Mac Studio (96GB)?
Gemma 4 31B at BF16 (16-bit) (~58.3GB) is the best fit — it's the largest model that runs comfortably within the 91GB of usable memory here.
What if I have more or less memory than 96GB?
With more (e.g. 128GB), you can run larger models or the same model more comfortably — see the Mac Studio page. With less (e.g. 64GB), the best-fitting model gets smaller or tighter — see the Mac Studio page.
Does 96GB mean I have the Ultra chip on a Mac Studio?
In most generations, yes — 96GB has typically been above what the Max chip configuration offers, making it a reliable, though not universal across every generation, signal of the Ultra chip.
What does the Ultra chip add besides more memory?
The Ultra chip is built by joining two Max dies, which roughly doubles memory bandwidth on top of the higher capacity ceiling — it's Apple's highest-bandwidth consumer chip, which matters more for inference speed than for which models fit.
Related
Gemma 4 on Mac Studio
The full setup guide for this device family.
Can You Run Gemma 4 on a Mac Studio (64GB)?
Mac Studio — 64GB
Can You Run Gemma 4 on a Mac Studio (128GB)?
Mac Studio — 128GB
Gemma 4 Hardware Requirements
The full memory table this checker is built on.
Full Hardware Checker
Every device type, every model, one tool.