Yi 1.5 9B needs ~12.7 GB VRAM. Radeon PRO W7900 DS 48GB has 48.0 GB. With Q4_K_M quantization, expect ~101 tok/s.
Operating mode
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
Fit status
Runs well
Decode
101.0 tok/s
TTFT
1917 ms
Safe context
4K
Memory
12.7 GB / 48.0 GB
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.
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | C | Runs well | 101.0 tok/s | 1046 ms | 4K |
| Coding | C | Runs well | 101.0 tok/s | 1917 ms | 4K |
| Agentic Coding | C | Runs well | 101.0 tok/s | 2789 ms | 4K |
| Reasoning | C | Runs well | 101.0 tok/s | 2266 ms | 4K |
| RAG | C | Runs well | 101.0 tok/s | 3486 ms | 4K |
How Yi 1.5 9B (9B params) fits at each quantization level on Radeon PRO W7900 DS 48GB (48.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 3.5 GB | Low | C46 |
Q3_K_S | 3 | 4.4 GB | Low | C46 |
NVFP4 | 4 |
Copy-paste commands to run Yi 1.5 9B on your machine.
Run
lms load Yi-1.5-9B-Chat && lms server startYes, Radeon PRO W7900 DS 48GB can run Yi 1.5 9B with a C grade (Runs well). Expected decode speed: 101.0 tok/s.
Yi 1.5 9B (9B parameters) requires approximately 12.7 GB of memory with Q4_K_M quantization.
The recommended quantization for Yi 1.5 9B is Q4_K_M, which balances quality and memory efficiency.
On Radeon PRO W7900 DS 48GB, Yi 1.5 9B achieves approximately 101.0 tokens per second decode speed with a time-to-first-token of 1917ms using Q4_K_M quantization.
For coding workloads, Yi 1.5 9B on Radeon PRO W7900 DS 48GB receives a C grade with 101.0 tok/s and 4K context.
On Radeon PRO W7900 DS 48GB, Yi 1.5 9B can safely use up to 4K tokens of context. The model's official context limit is 4K, but available memory constrains the safe maximum.
Paste this snippet into any page to show a live fit card.
<iframe src="https://willitrunai.com/embed/yi-1.5-9b-on-radeon-pro-w7900-ds-48gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>
Preview:
5.0 GB |
| Medium |
| C46 |
Q4_K_M | 4 | 5.5 GB | Medium | C46 |
Q5_K_M | 5 | 6.5 GB | High | C46 |
Q6_K | 6 | 7.4 GB | High | C47 |
Q8_0 | 8 | 9.6 GB | Very High | C47 |
F16Best for your GPU | 16 | 18.5 GB | Maximum | C50 |