Baichuan 13B needs ~24.1 GB but RX 6900 XT 16GB only has 16.0 GB. Try a smaller quantization or lighter model.
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
8.1 GB over capacity — needs offload or smaller quantization
Fit status
Too heavy
Decode
10.1 tok/s
TTFT
19169 ms
Safe context
5K
Memory
24.1 GB / 16.0 GB
Offload
30%
Usable VRAM is the main blocker for this model.
Not enough usable memory
The model needs 24.1 GB, but this setup only exposes 16.0 GB of usable VRAM.
Add more VRAM headroom
The first useful upgrade is more dedicated VRAM so you can fit the model without shrinking context or dropping to a much lower quant.
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | C | Very compromised (needs ~1 GB host RAM) | 18.7 tok/s | 5649 ms | 5K |
| Coding | F | Too heavy | 10.1 tok/s | 19169 ms | 5K |
| Agentic Coding | F | Too heavy | 4.8 tok/s | 59030 ms | 5K |
| Reasoning | F | Too heavy | 10.1 tok/s | 22654 ms | 5K |
| RAG | F | Too heavy | 4.8 tok/s | 73787 ms | 5K |
How Baichuan 13B (13B params) fits at each quantization level on RX 6900 XT 16GB (16.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 5.1 GB | Low | B65 |
Q3_K_S | 3 | 6.4 GB | Low | B66 |
NVFP4 | 4 | 7.3 GB | Medium | B67 |
Q4_K_M | 4 | 7.9 GB | Medium | B68 |
Q5_K_M | 5 | 9.4 GB | High | B67 |
Q6_KBest for your GPU | 6 | 10.7 GB | High | B67 |
Q8_0 | 8 | 13.9 GB | Very High | F0 |
F16 | 16 | 26.7 GB | Maximum | F0 |
Opciones de mejora
Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.
Elimina el offload a memoria del sistema, que suele ser la mayor mejora individual en latencia y throughput.
~$999 MSRP
Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.
Elimina el offload a memoria del sistema, que suele ser la mayor mejora individual en latencia y throughput.
~$1,899 MSRP
Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.
Elimina el offload a memoria del sistema, que suele ser la mayor mejora individual en latencia y throughput.
~$2,249 MSRP
No, Baichuan 13B requires more memory than RX 6900 XT 16GB provides.
Baichuan 13B (13B parameters) requires approximately 24.1 GB of memory with Q5_K_M quantization.
The recommended quantization for Baichuan 13B is Q5_K_M, which balances quality and memory efficiency.
On RX 6900 XT 16GB, Baichuan 13B achieves approximately 10.1 tokens per second decode speed with a time-to-first-token of 19169ms using Q5_K_M quantization.
For coding workloads, Baichuan 13B on RX 6900 XT 16GB receives a F grade with 10.1 tok/s and 5K context.
On RX 6900 XT 16GB, Baichuan 13B can safely use up to 5K tokens of context. The model's official context limit is 8K, but available memory constrains the safe maximum.
Add more VRAM headroom. The first useful upgrade is more dedicated VRAM so you can fit the model without shrinking context or dropping to a much lower quant.
Paste this snippet into any page to show a live fit card.
<iframe src="https://willitrunai.com/embed/baichuan-13b-on-rx-6900-xt-16gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>
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