Will It Run AI

Can internlm2 5 20b chat run on NVIDIA A100 40GB?

YES — Runs Great

C52Usable
Estimated from fit model

internlm2 5 20b chat needs ~19.7 GB VRAM. NVIDIA A100 40GB has 40.0 GB. With Q4_K_M quantization, expect ~107 tok/s.

Runtime: OllamaCapacity: RoomyBandwidth: HighStack: BasicBottleneck: Balanced
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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) — 19.7 GB, 107.1 tok/s, Runs well
19.7 GB required40.0 GB available
49% VRAM used

Fit status

Runs well

Decode

107.1 tok/s

TTFT

1808 ms

Safe context

154K

Memory

19.7 GB / 40.0 GB

Memory breakdown

Weights12.2 GB
KV Cache2.3 GB
Runtime1.2 GB
Headroom4.0 GB

See how fast it feels

See how fast it feelsinternlm2 5 20b chat on NVIDIA A100 40GB
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: 107.1 tok/s decode · 1.8s TTFT (warm) · 268 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

WorkloadGradeFitDecodeTTFTContext
ChatCRuns well107.1 tok/s986 ms154K
CodingCRuns well107.1 tok/s1808 ms154K
Agentic CodingCRuns well107.1 tok/s2630 ms154K
ReasoningCRuns well107.1 tok/s2137 ms154K
RAGCRuns well107.1 tok/s3288 ms154K

Quantization options

How internlm2 5 20b chat (20B params) fits at each quantization level on NVIDIA A100 40GB (40.0 GB usable).

QuantBitsVRAMQualityFit
Q2_K
2
7.8 GB
LowC43
Q3_K_S
3
9.8 GB
LowC44
NVFP4
4
11.2 GB
MediumC44
Q4_K_M
4
12.2 GB
MediumC45
Q5_K_M
5
14.4 GB
HighC45
Q6_K
6
16.4 GB
HighC46
Q8_0Best for your GPU
8
21.4 GB
Very HighC48
F16
16
41.0 GB
MaximumF0

Get started

Copy-paste commands to run internlm2 5 20b chat on your machine.

Run

lms load hf-bartowski--internlm2-5-20b-chat-gguf && lms server start

Frequently asked questions

Can NVIDIA A100 40GB run internlm2 5 20b chat?

Yes, NVIDIA A100 40GB can run internlm2 5 20b chat with a C grade (Runs well). Expected decode speed: 107.1 tok/s.

How much VRAM does internlm2 5 20b chat need?

internlm2 5 20b chat (20B parameters) requires approximately 19.7 GB of memory with Q4_K_M quantization.

What is the best quantization for internlm2 5 20b chat?

The recommended quantization for internlm2 5 20b chat is Q4_K_M, which balances quality and memory efficiency.

What speed will internlm2 5 20b chat run at on NVIDIA A100 40GB?

On NVIDIA A100 40GB, internlm2 5 20b chat achieves approximately 107.1 tokens per second decode speed with a time-to-first-token of 1808ms using Q4_K_M quantization.

Can NVIDIA A100 40GB run internlm2 5 20b chat for coding?

For coding workloads, internlm2 5 20b chat on NVIDIA A100 40GB receives a C grade with 107.1 tok/s and 154K context.

What context window can internlm2 5 20b chat use on NVIDIA A100 40GB?

On NVIDIA A100 40GB, internlm2 5 20b chat can safely use up to 154K tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.

See all results for NVIDIA A100 40GBSee all hardware for internlm2 5 20b chat
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<iframe src="https://willitrunai.com/embed/hf-bartowski--internlm2-5-20b-chat-gguf-on-a100-40gb" 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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