Can openchat 3.6 8b 20240522 IMat run on RTX 4090 Laptop 16GB?

YES — Runs Great

C53Usable

Estimated from fit model

openchat 3.6 8b 20240522 IMat needs ~8.6 GB VRAM. RTX 4090 Laptop 16GB has 16.0 GB. With Q4_K_M quantization, expect ~94 tok/s.

Runtime: OllamaCapacity: RoomyBandwidth: MediumStack: 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) — 8.6 GB, 94.4 tok/s, Runs well

8.6 GB required16.0 GB available

54% VRAM used

Fit status

Runs well

Decode

94.4 tok/s

TTFT

2050 ms

Safe context

142K

Memory

8.6 GB / 16.0 GB

Memory breakdown

Weights4.9 GB

KV Cache0.9 GB

Runtime1.2 GB

Headroom1.6 GB

See how fast it feels

See how fast it feelsopenchat 3.6 8b 20240522 IMat 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: 94.4 tok/s decode · 2.0s TTFT (warm) · 236 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	94.4 tok/s	1118 ms	142K
Coding	C	Runs well	94.4 tok/s	2050 ms	142K
Agentic Coding	C	Runs well	94.4 tok/s	2982 ms	142K
Reasoning	C	Runs well	94.4 tok/s	2423 ms	142K
RAG	C	Runs well	94.4 tok/s	3728 ms	142K

Quantization options

How openchat 3.6 8b 20240522 IMat (8B params) fits at each quantization level on RTX 4090 Laptop 16GB (16.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	3.1 GB	Low	C47
Q3_K_S	3	3.9 GB	Low	C48
NVFP4	4

Get started

Copy-paste commands to run openchat 3.6 8b 20240522 IMat on your machine.

Run

lms load hf-legraphista--openchat-3-6-8b-20240522-imat-gguf && lms server start

Frequently asked questions

Can RTX 4090 Laptop 16GB run openchat 3.6 8b 20240522 IMat?

Yes, RTX 4090 Laptop 16GB can run openchat 3.6 8b 20240522 IMat with a C grade (Runs well). Expected decode speed: 94.4 tok/s.

How much VRAM does openchat 3.6 8b 20240522 IMat need?

openchat 3.6 8b 20240522 IMat (8B parameters) requires approximately 8.6 GB of memory with Q4_K_M quantization.

What is the best quantization for openchat 3.6 8b 20240522 IMat?

The recommended quantization for openchat 3.6 8b 20240522 IMat is Q4_K_M, which balances quality and memory efficiency.

What speed will openchat 3.6 8b 20240522 IMat run at on RTX 4090 Laptop 16GB?

On RTX 4090 Laptop 16GB, openchat 3.6 8b 20240522 IMat achieves approximately 94.4 tokens per second decode speed with a time-to-first-token of 2050ms using Q4_K_M quantization.

Can RTX 4090 Laptop 16GB run openchat 3.6 8b 20240522 IMat for coding?

For coding workloads, openchat 3.6 8b 20240522 IMat on RTX 4090 Laptop 16GB receives a C grade with 94.4 tok/s and 142K context.

What context window can openchat 3.6 8b 20240522 IMat use on RTX 4090 Laptop 16GB?

On RTX 4090 Laptop 16GB, openchat 3.6 8b 20240522 IMat can safely use up to 142K tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.

See all results for RTX 4090 Laptop 16GB See all hardware for openchat 3.6 8b 20240522 IMat

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