internlm2 5 20b chat needs ~17.0 GB VRAM. NVIDIA A2 16GB has 16.0 GB. With Q4_K_M quantization, expect ~8 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
1.0 GB over capacity — needs offload or smaller quantization
Fit status
Runs with offload (needs ~0.7 GB host RAM)
Decode
8.4 tok/s
TTFT
23060 ms
Safe context
9K
Memory
17.0 GB / 16.0 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 0.7 GB of extra host RAM just for the offloaded portion, before OS and other tools.
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | C | Runs with offload | 12.8 tok/s | 8258 ms | 9K |
| Coding | D | Runs with offload (needs ~0.7 GB host RAM) | 8.4 tok/s | 23060 ms | 9K |
| Agentic Coding | F | Too heavy | 6.4 tok/s | 43991 ms | 9K |
| Reasoning | D | Runs with offload (needs ~0.7 GB host RAM) | 8.4 tok/s | 27252 ms | 9K |
| RAG | F | Too heavy | 6.4 tok/s | 54989 ms |
How internlm2 5 20b chat (20B params) fits at each quantization level on NVIDIA A2 16GB (16.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 7.8 GB | Low | C51 |
Q3_K_S | 3 | 9.8 GB | Low | C51 |
NVFP4 | 4 |
Copy-paste commands to run internlm2 5 20b chat on your machine.
Run
lms load hf-bartowski--internlm2-5-20b-chat-gguf && lms server startUpgrade options
RTX 4000 Ada 20GBBudget pickRemoves host-memory offload, which is usually the single biggest latency and throughput win.
Raises estimated decode speed by about 174%.
~$1,250 MSRP
RTX 3090 24GBBest valueRemoves host-memory offload, which is usually the single biggest latency and throughput win.
Raises estimated decode speed by about 456%.
~$1,499 MSRP
RTX PRO 4000 Blackwell 24GBNVIDIA upgradeRemoves host-memory offload, which is usually the single biggest latency and throughput win.
Raises estimated decode speed by about 451%.
~$1,599 MSRP
Yes, NVIDIA A2 16GB can run internlm2 5 20b chat with a D grade (Runs with offload (needs ~0.7 GB host RAM)). Expected decode speed: 8.4 tok/s.
internlm2 5 20b chat (20B parameters) requires approximately 17.0 GB of memory with Q4_K_M quantization.
The recommended quantization for internlm2 5 20b chat is Q4_K_M, which balances quality and memory efficiency.
On NVIDIA A2 16GB, internlm2 5 20b chat achieves approximately 8.4 tokens per second decode speed with a time-to-first-token of 23060ms using Q4_K_M quantization.
For coding workloads, internlm2 5 20b chat on NVIDIA A2 16GB receives a D grade with 8.4 tok/s and 9K context.
On NVIDIA A2 16GB, internlm2 5 20b chat can safely use up to 9K tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.
Paste this snippet into any page to show a live fit card.
<iframe src="https://willitrunai.com/embed/hf-bartowski--internlm2-5-20b-chat-gguf-on-a2-16gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>
Preview:
| 9K |
| Medium |
| C50 |
Q4_K_MBest for your GPU | 4 | 12.2 GB | Medium | C50 |
Q5_K_M | 5 | 14.4 GB | High | F0 |
Q6_K | 6 | 16.4 GB | High | F0 |
Q8_0 | 8 | 21.4 GB | Very High | F0 |
F16 | 16 | 41.0 GB | Maximum | F0 |
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.