Can DeepSeek LLM 7B run on RTX 4000 Ada 20GB?

YES — Runs Great

C54Usable

Estimated from fit model

DeepSeek LLM 7B needs ~14.8 GB VRAM. RTX 4000 Ada 20GB has 20.0 GB. With Q4_K_M quantization, expect ~66 tok/s.

Runtime: OllamaCapacity: RoomyBandwidth: LowStack: BasicBottleneck: Balanced

Operating mode

Choose the run profile you care about

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.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 14.8 GB, 65.8 tok/s, Runs well

14.8 GB required20.0 GB available

74% VRAM used

Fit status

Runs well

Decode

65.8 tok/s

TTFT

2944 ms

Safe context

Memory

14.8 GB / 20.0 GB

Memory breakdown

Weights4.3 GB

KV Cache7.3 GB

Runtime1.2 GB

Headroom2.0 GB

See how fast it feels

See how fast it feelsDeepSeek LLM 7B on RTX 4000 Ada 20GB
1st promptCold start — includes initialization
>What is local AI inference?
Local AI inference means running an AI language model directly on your own hardware — your laptop, desktop, or server — instead of sending requests to a remote cloud API.

When you run inference locally the model weights are loaded into your GPU or unified memory. Each token you generate requires reading those weights from memory, so memory bandwidth is the main bottleneck for decode speed.

Key benefits of running locally:
  - Full privacy: your prompts never leave your machine
  - No per-token cost or rate limits
  - Works offline once the model is downloaded
  - Latency depends only on your hardware
2nd promptWarm — model ready, no init overhead
>How much VRAM do I need?
It depends on the model size and quantization level. A rough rule of thumb:

  Model size     Q4 (4-bit)    Q8 (8-bit)    FP16
  7B params      ~4.3 GB       ~7.5 GB       ~14 GB
  13B params     ~7.9 GB       ~13.9 GB      ~26 GB
  70B params     ~42.7 GB      ~74.9 GB      ~140 GB

Most people use 4-bit quantization (Q4_K_M) which gives 90-95% of full quality at a fraction of the memory. A 24 GB GPU can comfortably run most 7B-13B models.
Estimated: 65.8 tok/s decode · 2.9s TTFT (warm) · 164 tok/s prefill

What limits this setup

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.

Best improvement path

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	C	Runs well	65.8 tok/s	1606 ms	4K
Coding	C	Runs well	65.8 tok/s	2944 ms	4K
Agentic Coding	D	Very compromised (needs ~0.4 GB host RAM)	39.9 tok/s	7057 ms	4K
Reasoning	C	Runs well	65.8 tok/s	3479 ms	4K
RAG	D	Very compromised (needs ~0.4 GB host RAM)	39.9 tok/s	8822 ms	4K

Quantization options

How DeepSeek LLM 7B (7B params) fits at each quantization level on RTX 4000 Ada 20GB (20.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	2.7 GB	Low	C44
Q3_K_S	3	3.4 GB	Low	C44
NVFP4	4

Get started

Copy-paste commands to run DeepSeek LLM 7B on your machine.

Run

ollama run deepseek-llm

Frequently asked questions

Can RTX 4000 Ada 20GB run DeepSeek LLM 7B?

Yes, RTX 4000 Ada 20GB can run DeepSeek LLM 7B with a C grade (Runs well). Expected decode speed: 65.8 tok/s.

How much VRAM does DeepSeek LLM 7B need?

DeepSeek LLM 7B (7B parameters) requires approximately 14.8 GB of memory with Q4_K_M quantization.

What is the best quantization for DeepSeek LLM 7B?

The recommended quantization for DeepSeek LLM 7B is Q4_K_M, which balances quality and memory efficiency.

What speed will DeepSeek LLM 7B run at on RTX 4000 Ada 20GB?

On RTX 4000 Ada 20GB, DeepSeek LLM 7B achieves approximately 65.8 tokens per second decode speed with a time-to-first-token of 2944ms using Q4_K_M quantization.

Can RTX 4000 Ada 20GB run DeepSeek LLM 7B for coding?

For coding workloads, DeepSeek LLM 7B on RTX 4000 Ada 20GB receives a C grade with 65.8 tok/s and 4K context.

What context window can DeepSeek LLM 7B use on RTX 4000 Ada 20GB?

On RTX 4000 Ada 20GB, DeepSeek LLM 7B can safely use up to 4K tokens of context. The model's official context limit is 4K, but available memory constrains the safe maximum.

See all results for RTX 4000 Ada 20GB See all hardware for DeepSeek LLM 7B

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