Cerebras-GPT 13B needs ~21.5 GB but RTX 4080 Laptop 12GB only has 12.0 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
9.5 GB over capacity — needs offload or smaller quantization
Fit status
Too heavy
Decode
8.0 tok/s
TTFT
24051 ms
Safe context
4K
Memory
21.5 GB / 12.0 GB
Offload
40%
Usable VRAM is the main blocker for this model.
Not enough usable memory
The model needs 21.5 GB, but this setup only exposes 12.0 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 | F | Too heavy | 13.8 tok/s | 7633 ms | 4K |
| Coding | F | Too heavy | 8.0 tok/s | 24051 ms | 4K |
| Agentic Coding | F | Too heavy | 5.5 tok/s | 51126 ms | 4K |
| Reasoning | F | Too heavy | 8.0 tok/s | 28424 ms | 4K |
| RAG | F | Too heavy | 5.5 tok/s | 63907 ms | 4K |
How Cerebras-GPT 13B (13B params) fits at each quantization level on RTX 4080 Laptop 12GB (12.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 5.1 GB | Low | B68 |
Q3_K_S | 3 | 6.4 GB | Low | B68 |
NVFP4 | 4 |
Upgrade options
RTX 4000 Ada 20GBBest valueMakes the model fit on the accelerator instead of staying completely out of reach.
Raises estimated decode speed by about 127%.
~$1,250 MSRP
RTX 3090 24GBBudget pickMakes the model fit on the accelerator instead of staying completely out of reach.
Removes host-memory offload, which is usually the single biggest latency and throughput win.
~$1,499 MSRP
RTX 4090 24GBNVIDIA upgradeMakes the model fit on the accelerator instead of staying completely out of reach.
Removes host-memory offload, which is usually the single biggest latency and throughput win.
~$1,599 MSRP
No, Cerebras-GPT 13B requires more memory than RTX 4080 Laptop 12GB provides.
Cerebras-GPT 13B (13B parameters) requires approximately 21.5 GB of memory with Q5_K_M quantization.
The recommended quantization for Cerebras-GPT 13B is Q5_K_M, which balances quality and memory efficiency.
On RTX 4080 Laptop 12GB, Cerebras-GPT 13B achieves approximately 8.0 tokens per second decode speed with a time-to-first-token of 24051ms using Q5_K_M quantization.
For coding workloads, Cerebras-GPT 13B on RTX 4080 Laptop 12GB receives a F grade with 8.0 tok/s and 4K context.
On RTX 4080 Laptop 12GB, Cerebras-GPT 13B can safely use up to 4K tokens of context. The model's official context limit is 131K, 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/cerebras-gpt-13b-on-rtx-4080-laptop-12gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>
Preview:
7.3 GB |
| Medium |
| B68 |
Q4_K_MBest for your GPU | 4 | 7.9 GB | Medium | B68 |
Q5_K_M | 5 | 9.4 GB | High | F0 |
Q6_K | 6 | 10.7 GB | High | F0 |
Q8_0 | 8 | 13.9 GB | Very High | F0 |
F16 | 16 | 26.7 GB | Maximum | F0 |
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.
