DeepSeek LLM 67B needs ~52.4 GB VRAM. NVIDIA L20 48GB has 48.0 GB. With Q4_K_M quantization, expect ~6 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
4.4 GB over capacity — needs offload or smaller quantization
Fit status
Very compromised (needs ~3.4 GB host RAM)
Decode
6.0 tok/s
TTFT
32077 ms
Safe context
4K
Memory
52.4 GB / 48.0 GB
Offload
10%
It fits through host-memory offload, and offload is the main reason performance drops.
CPU or host-memory offload is active
About 10% of the working set spills out of accelerator memory, which usually hurts latency and sustained decode throughput.
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.
Remove offload with more accelerator memory
Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.
Buy headroom, not only minimum fit
A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.
Increase host RAM if you keep offloading
This setup may need roughly 3.4 GB of extra host RAM just for the offloaded portion, before OS and other tools.
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | B | Runs with offload (needs ~1.2 GB host RAM) | 6.8 tok/s | 15520 ms | 4K |
| Coding | C | Very compromised (needs ~3.4 GB host RAM) | 6.0 tok/s | 32077 ms | 4K |
| Agentic Coding | F | Too heavy | 4.8 tok/s | 58199 ms | 4K |
| Reasoning | C | Very compromised (needs ~3.4 GB host RAM) | 6.0 tok/s | 37909 ms | 4K |
| RAG | F | Too heavy | 4.8 tok/s | 72749 ms | 4K |
How DeepSeek LLM 67B (67B params) fits at each quantization level on NVIDIA L20 48GB (48.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 26.1 GB | Low | B58 |
Q3_K_S | 3 | 32.8 GB | Low | B58 |
NVFP4Best for your GPU | 4 | 37.5 GB | Medium | B58 |
Q4_K_M | 4 | 40.9 GB | Medium | F0 |
Q5_K_M | 5 | 48.2 GB | High | F0 |
Q6_K | 6 | 54.9 GB | High | F0 |
Q8_0 | 8 | 71.7 GB | Very High | F0 |
F16 | 16 | 137.4 GB | Maximum | F0 |
Copy-paste commands to run DeepSeek LLM 67B on your machine.
Run
docker run --rm -it ghcr.io/ggerganov/llama.cpp:full \
--hf-repo "deepseek-ai/deepseek-llm-67b-chat" \
--hf-file "deepseek-llm-67b-chat-Q4_K_M.gguf" \
-c 4096 -ngl 99Upgrade options
NVIDIA A16 64GBBudget pickRemoves host-memory offload, which is usually the single biggest latency and throughput win.
Raises estimated decode speed by about 108%.
~$6,500 MSRP
RTX PRO 6000 Blackwell Workstation Edition 96GBBest valueRemoves host-memory offload, which is usually the single biggest latency and throughput win.
Raises estimated decode speed by about 568%.
~$9,999 MSRP
RTX PRO 6000 Blackwell Server Edition 96GBNVIDIA upgradeRemoves host-memory offload, which is usually the single biggest latency and throughput win.
Raises estimated decode speed by about 495%.
~$9,999 MSRP
Yes, NVIDIA L20 48GB can run DeepSeek LLM 67B with a C grade (Very compromised (needs ~3.4 GB host RAM)). Expected decode speed: 6.0 tok/s.
DeepSeek LLM 67B (67B parameters) requires approximately 52.4 GB of memory with Q4_K_M quantization.
The recommended quantization for DeepSeek LLM 67B is Q4_K_M, which balances quality and memory efficiency.
On NVIDIA L20 48GB, DeepSeek LLM 67B achieves approximately 6.0 tokens per second decode speed with a time-to-first-token of 32077ms using Q4_K_M quantization.
For coding workloads, DeepSeek LLM 67B on NVIDIA L20 48GB receives a C grade with 6.0 tok/s and 4K context.
On NVIDIA L20 48GB, DeepSeek LLM 67B can safely use up to 4K tokens of context. The model's official context limit is 4K, but available memory constrains the safe maximum.
Remove offload with more accelerator memory. Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.
Paste this snippet into any page to show a live fit card.
<iframe src="https://willitrunai.com/embed/deepseek-llm-67b-on-l20-48gb" 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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