Can Command R 35B run on RTX 4090 Laptop 16GB?

YES — With Q2_K

B63Good

Estimated from fit model

Command R 35B needs ~18.6 GB VRAM. RTX 4090 Laptop 16GB has 16.0 GB. With Q2_K quantization, expect ~10 tok/s.

Runtime: llama.cppCapacity: OffloadBandwidth: MediumStack: StandardBottleneck: Host offload

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.

Command R 35B at Q4_K_M needs 26.3 GB — too much for RTX 4090 Laptop 16GB (16.0 GB). Runs at Q2_K (18.6 GB) with low quality.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 26.3 GB, exceeds 16.0 GB available

26.3 GB required16.0 GB available

164% VRAM needed

10.3 GB over capacity — needs offload or smaller quantization

Fit status

Too heavy

Decode

3.6 tok/s

TTFT

54314 ms

Safe context

Memory

26.3 GB / 16.0 GB

Offload

40%

Memory breakdown

Weights21.3 GB

KV Cache2.4 GB

Runtime0.9 GB

Headroom1.6 GB

See how fast it feels

With memory offload — actual speed may be lower

See how fast it feelsCommand R 35B on RTX 4090 Laptop 16GB
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: 3.6 tok/s decode · 54.3s TTFT (warm) · 9 tok/s prefill

What limits this setup

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.

Best improvement path

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 1.9 GB of extra host RAM just for the offloaded portion, before OS and other tools.

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	F	Too heavy	3.9 tok/s	26805 ms	4K
Coding	F	Too heavy	3.6 tok/s	54314 ms	4K
Agentic Coding	F	Too heavy	3.0 tok/s	95240 ms	4K
Reasoning	F	Too heavy	3.6 tok/s	64189 ms	4K
RAG	F	Too heavy	3.0 tok/s	119050 ms	4K

Quantization options

How Command R 35B (35B params) fits at each quantization level on RTX 4090 Laptop 16GB (16.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	13.7 GB	Low	F0
Q3_K_S	3	17.2 GB	Low	F0
NVFP4	4	19.6 GB	Medium	F0
Q4_K_M	4	21.3 GB	Medium	F0
Q5_K_M	5	25.2 GB	High	F0
Q6_K	6	28.7 GB	High	F0
Q8_0	8	37.5 GB	Very High	F0
F16	16	71.8 GB	Maximum	F0

Get started

Copy-paste commands to run Command R 35B on your machine.

Run

ollama run command-r

Opções de upgrade

Hardware que roda bem Command R 35B

RTX 3090 24GBMelhor custo-benefício

24 GB VRAM (+8)936 GB/s (+360)

Makes the model fit on the accelerator instead of staying completely out of reach.12 tok/s decodificação

Makes the model fit on the accelerator instead of staying completely out of reach.

Raises estimated decode speed by about 233%.

~$1,499 MSRP

RTX 4090 24GBUpgrade NVIDIA

24 GB VRAM (+8)1008 GB/s (+432)

Makes the model fit on the accelerator instead of staying completely out of reach.13.1 tok/s decodificação

Makes the model fit on the accelerator instead of staying completely out of reach.

Raises estimated decode speed by about 264%.

~$1,599 MSRP

RTX 5090 32GBOpção econômica

32 GB VRAM (+16)1792 GB/s (+1216)

Makes the model fit on the accelerator instead of staying completely out of reach.39.6 tok/s decodificação

Makes 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.

~$1,999 MSRP

Frequently asked questions

Can RTX 4090 Laptop 16GB run Command R 35B?

Yes, RTX 4090 Laptop 16GB can run Command R 35B at Q2_K quantization (Very compromised (needs ~1.9 GB host RAM)). The recommended Q4_K_M requires 26.3 GB which exceeds available memory, but at Q2_K it needs only 18.6 GB. Expected decode speed: 9.8 tok/s.

How much VRAM does Command R 35B need?

Command R 35B (35B parameters) requires approximately 26.3 GB at Q4_K_M quantization. On RTX 4090 Laptop 16GB, it fits at Q2_K using 18.6 GB.

What is the best quantization for Command R 35B?

The recommended quantization is Q4_K_M, but on RTX 4090 Laptop 16GB the best fitting quantization is Q2_K, which uses 18.6 GB.

What speed will Command R 35B run at on RTX 4090 Laptop 16GB?

On RTX 4090 Laptop 16GB, Command R 35B achieves approximately 9.8 tokens per second decode speed with a time-to-first-token of 19698ms using Q2_K quantization.

Can RTX 4090 Laptop 16GB run Command R 35B for coding?

For coding workloads, Command R 35B on RTX 4090 Laptop 16GB receives a F grade with 3.6 tok/s and 4K context.

What context window can Command R 35B use on RTX 4090 Laptop 16GB?

On RTX 4090 Laptop 16GB, Command R 35B can safely use up to 4K tokens of context at Q2_K quantization. The model's official context limit is 131K, but available memory constrains the safe maximum.

What should I upgrade first if Command R 35B feels slow on RTX 4090 Laptop 16GB?

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.

See all results for RTX 4090 Laptop 16GB See all hardware for Command R 35B

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