WizardLM 13B needs ~23.7 GB VRAM. RTX PRO 4000 Blackwell 24GB has 24.0 GB. With Q4_K_M quantization, expect ~71 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 with offload
Decode
71.2 tok/s
TTFT
2720 ms
Safe context
8K
Memory
23.7 GB / 24.0 GB
This setup is broadly balanced for this model.
Very little memory headroom
You can run the model, but there is not much room left for longer context, bigger batches, extra apps, or future model updates.
Buy headroom, not only minimum fit
A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | A | Runs well | 71.2 tok/s | 1484 ms | 8K |
| Coding | A | Runs with offload | 71.2 tok/s | 2720 ms | 8K |
| Agentic Coding | F | Too heavy | 23.9 tok/s | 11793 ms | 8K |
| Reasoning | A | Runs with offload | 71.2 tok/s | 3214 ms | 8K |
| RAG | F | Too heavy | 23.9 tok/s | 14741 ms | 8K |
How WizardLM 13B (13B params) fits at each quantization level on RTX PRO 4000 Blackwell 24GB (24.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 5.1 GB | Low | B66 |
Q3_K_S | 3 | 6.4 GB | Low | B67 |
NVFP4 | 4 | 7.3 GB | Medium | B67 |
Q4_K_M | 4 | 7.9 GB | Medium | B68 |
Q5_K_M | 5 | 9.4 GB | High | B69 |
Q6_K | 6 | 10.7 GB | High | B70 |
Q8_0Best for your GPU | 8 | 13.9 GB | Very High | A71 |
F16 | 16 | 26.7 GB | Maximum | F0 |
Copy-paste commands to run WizardLM 13B on your machine.
Run
lms load WizardLM-13B-V1.0 && lms server startYour hardware
| Model | Params | Grade | Decode | Capabilities |
|---|---|---|---|---|
 Qwen3-Coder 30B A3B Instruct | 30.5B | S | 85.4 tok/s | |
| Qwen 3.5 27B | 27B | S | 37 tok/s | |
| Qwen 3.6 27B | 27B | S | 37.1 tok/s | |
| Qwen3-VL 30B A3B Instruct | 30B | S | 88.3 tok/s | |
| Qwen 3.5 35B A3B | 35B | A | 49.1 tok/s |
Yes, RTX PRO 4000 Blackwell 24GB can run WizardLM 13B with a A grade (Runs with offload). Expected decode speed: 71.2 tok/s.
WizardLM 13B (13B parameters) requires approximately 23.7 GB of memory with Q4_K_M quantization.
The recommended quantization for WizardLM 13B is Q4_K_M, which balances quality and memory efficiency.
On RTX PRO 4000 Blackwell 24GB, WizardLM 13B achieves approximately 71.2 tokens per second decode speed with a time-to-first-token of 2720ms using Q4_K_M quantization.
For coding workloads, WizardLM 13B on RTX PRO 4000 Blackwell 24GB receives a A grade with 71.2 tok/s and 8K context.
On RTX PRO 4000 Blackwell 24GB, WizardLM 13B can safely use up to 8K tokens of context. The model's official context limit is 8K, but available memory constrains the safe maximum.
Buy headroom, not only minimum fit. A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.
Paste this snippet into any page to show a live fit card.
<iframe src="https://willitrunai.com/embed/wizardlm-13b-on-rtx-pro-4000-blackwell-24gb" 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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