RTX PRO 6000 Blackwell Workstation Edition 96GB经济之选1792 GB/s (+992)
B
Raises estimated decode speed by about 166%.59.6 tok/s 解码
Raises estimated decode speed by about 166%.
~$9,999 MSRP
Can Gemma 2 27B run on Mac Studio M2 Ultra 128GB?
YES — Runs Great
B67Good
Estimated from fit model
Gemma 2 27B needs ~42.4 GB VRAM. Mac Studio M2 Ultra 128GB has 92.2 GB. With Q4_K_M quantization, expect ~22 tok/s.
Runtime: llama.cppCapacity: RoomyBandwidth: HighStack: StandardBottleneck: Balanced
Operating mode
Choose the run profile you care about
Interactive favors responsiveness, while light API and scale-out lean harder on serving readiness. The fit stays the same, but the recommendation lens changes.
Current mode
Balanced
Balanced for general local use. Keeps the ranking neutral across personal and serving workflows.
Select quantization to explore
Q4_K_M (Medium quality) — 42.4 GB, 22.4 tok/s, Runs well
42.4 GB required92.2 GB available
46% VRAM used
Fit status
Runs well
Decode
22.4 tok/s
TTFT
8636 ms
Safe context
8K
Memory
42.4 GB / 92.2 GB
Memory breakdown
Weights16.5 GB
KV Cache11.2 GB
Runtime0.9 GB
Headroom13.8 GB
See how fast it feels
See how fast it feelsGemma 2 27B on Mac Studio M2 Ultra 128GB
1st promptCold start — includes initialization
>Solve: If a train travels at 60 mph for 2.5 hours, how far does it go?
Let me work through this step by step.
Given information:
- Speed = 60 mph (miles per hour)
- Time = 2.5 hours
Formula: Distance = Speed x Time
Calculation:
Distance = 60 mph x 2.5 h
= 150 miles
The train travels 150 miles.
Double-check: at 60 mph the train covers 60 miles each hour. In half an hour it covers 30 miles. So in 2.5 hours: 60 + 60 + 30 = 150 miles. Confirmed.
2nd promptWarm — model ready, no init overhead
>What if the train stops for 20 minutes halfway?
The stop doesn't change the total distance covered while moving, but it affects total trip time.
Breakdown:
- First half: 1.25 hours at 60 mph = 75 miles
- Stop: 20 minutes (no distance)
- Second half: 1.25 hours at 60 mph = 75 miles
Total distance: 150 miles (same)
Total time: 2.5 h + 0.33 h = 2.83 hours
Average speed: 150 / 2.83 = 53 mph
The distance stays the same but average speed drops to 53 mph because of the stop.
Estimated: 22.4 tok/s decode · 8.6s TTFT (warm) · 56 tok/s prefill
What limits this setup
This setup is broadly balanced for this model.
Shared-memory contention still exists
The OS, browser, and inference runtime all compete for the same physical memory pool, so real-world headroom is less forgiving than raw capacity suggests.
Best improvement path
Performance by workload
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | B | Runs well | 22.4 tok/s | 4710 ms | 8K |
| Coding | B | Runs well | 22.4 tok/s | 8636 ms | 8K |
| Agentic Coding | B | Runs well | 22.4 tok/s | 12561 ms | 8K |
| Reasoning | B | Runs well | 22.4 tok/s | 10206 ms | 8K |
| RAG | B | Runs well | 22.4 tok/s | 15701 ms | 8K |
Quantization options
How Gemma 2 27B (27B params) fits at each quantization level on Mac Studio M2 Ultra 128GB (92.2 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 10.5 GB | Low | B59 |
Q3_K_S | 3 | 13.2 GB | Low | B60 |
NVFP4 | 4 | 15.1 GB | Medium | B60 |
Q4_K_M | 4 | 16.5 GB | Medium | B60 |
Q5_K_M | 5 | 19.4 GB | High | B60 |
Q6_K | 6 | 22.1 GB | High | B61 |
Q8_0 | 8 | 28.9 GB | Very High | B62 |
F16Best for your GPU | 16 | 55.4 GB | Maximum | B67 |
Get started
Copy-paste commands to run Gemma 2 27B on your machine.
Run
ollama run gemma2:27b升级选项
能流畅运行 Gemma 2 27B 的硬件
Frequently asked questions
Can Mac Studio M2 Ultra 128GB run Gemma 2 27B?
Yes, Mac Studio M2 Ultra 128GB can run Gemma 2 27B with a B grade (Runs well). Expected decode speed: 22.4 tok/s.
How much VRAM does Gemma 2 27B need?
Gemma 2 27B (27B parameters) requires approximately 42.4 GB of memory with Q4_K_M quantization.
What is the best quantization for Gemma 2 27B?
The recommended quantization for Gemma 2 27B is Q4_K_M, which balances quality and memory efficiency.
What speed will Gemma 2 27B run at on Mac Studio M2 Ultra 128GB?
On Mac Studio M2 Ultra 128GB, Gemma 2 27B achieves approximately 22.4 tokens per second decode speed with a time-to-first-token of 8636ms using Q4_K_M quantization.
Can Mac Studio M2 Ultra 128GB run Gemma 2 27B for coding?
For coding workloads, Gemma 2 27B on Mac Studio M2 Ultra 128GB receives a B grade with 22.4 tok/s and 8K context.
What context window can Gemma 2 27B use on Mac Studio M2 Ultra 128GB?
On Mac Studio M2 Ultra 128GB, Gemma 2 27B can safely use up to 8K tokens of context. The model's official context limit is 8K, but available memory constrains the safe maximum.
Is unified memory on Mac Studio M2 Ultra 128GB as fast as VRAM for Gemma 2 27B?
Not always. Mac Studio M2 Ultra 128GB can often fit larger models thanks to unified memory, but a discrete GPU with dedicated high-bandwidth VRAM may still decode faster once the model fits. For this combination, the important distinction is capacity versus sustained throughput.
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