MacBook Pro M4 Max 48GBBudget pick
48 GB Unified (+16)
C
Raises estimated decode speed by about 62%.33.4 tok/s decode
Raises estimated decode speed by about 62%.
~$2,499 MSRP
Can Qwen3.5 27B run on Radeon Pro W7800 32GB?
YES — Runs Great
C52Usable
○Estimated from fit model
Qwen3.5 27B needs ~23.7 GB VRAM. Radeon Pro W7800 32GB has 32.0 GB. With Q4_K_M quantization, expect ~21 tok/s.
Runtime: llama.cppCapacity: RoomyBandwidth: MediumStack: StandardBottleneck: Balanced
Share:
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) — 23.7 GB, 20.6 tok/s, Runs well
23.7 GB required32.0 GB available
74% VRAM used
Fit status
Runs well
Decode
20.6 tok/s
TTFT
9383 ms
Safe context
58K
Memory
23.7 GB / 32.0 GB
Memory breakdown
Weights16.5 GB
KV Cache3.2 GB
Runtime0.9 GB
Headroom3.2 GB
See how fast it feels
See how fast it feelsQwen3.5 27B on Radeon Pro W7800 32GB
1st promptCold start — includes initialization
>What is local AI inference?
Local AI inference means running an AI language model directly on your own hardware — your laptop, desktop, or server — instead of sending requests to a remote cloud API.
When you run inference locally the model weights are loaded into your GPU or unified memory. Each token you generate requires reading those weights from memory, so memory bandwidth is the main bottleneck for decode speed.
Key benefits of running locally:
- Full privacy: your prompts never leave your machine
- No per-token cost or rate limits
- Works offline once the model is downloaded
- Latency depends only on your hardware
2nd promptWarm — model ready, no init overhead
>How much VRAM do I need?
It depends on the model size and quantization level. A rough rule of thumb:
Model size Q4 (4-bit) Q8 (8-bit) FP16
7B params ~4.3 GB ~7.5 GB ~14 GB
13B params ~7.9 GB ~13.9 GB ~26 GB
70B params ~42.7 GB ~74.9 GB ~140 GB
Most people use 4-bit quantization (Q4_K_M) which gives 90-95% of full quality at a fraction of the memory. A 24 GB GPU can comfortably run most 7B-13B models.
Estimated: 20.6 tok/s decode · 9.4s TTFT (warm) · 52 tok/s prefill
What limits this setup
This setup is broadly balanced for this model.
No major red flags
This recommendation has enough memory headroom and acceptable estimated speed for the selected workload.
Best improvement path
Performance by workload
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | C | Runs well | 20.6 tok/s | 5118 ms | 58K |
| Coding | C | Runs well | 20.6 tok/s | 9383 ms | 58K |
| Agentic Coding | C | Tight fit | 20.6 tok/s | 13647 ms | 58K |
| Reasoning | C | Runs well | 20.6 tok/s | 11089 ms | 58K |
| RAG | C | Tight fit | 20.6 tok/s | 17059 ms | 58K |
Quantization options
How Qwen3.5 27B (27B params) fits at each quantization level on Radeon Pro W7800 32GB (32.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 10.5 GB | Low | C47 |
Q3_K_S | 3 | 13.2 GB | Low | C48 |
NVFP4 | 4 |
Get started
Copy-paste commands to run Qwen3.5 27B on your machine.
Run
docker run --rm -it ghcr.io/ggerganov/llama.cpp:full \
--hf-repo "unsloth/Qwen3.5-27B-GGUF" \
--hf-file "Qwen3.5-27B-GGUF-Q4_K_M.gguf" \
-c 4096 -ngl 99Upgrade options