RTX 5070 12GB经济之选12 GB VRAM (+1)672 GB/s (+188)
B
Raises estimated decode speed by about 48%.86.8 tok/s 解码
Raises estimated decode speed by about 48%.
~$549 MSRP
Can Meta Llama 3.1 8B Instruct run on GTX 1080 Ti 11GB?
YES — Runs Great
B56Good
Estimated from fit model
Meta Llama 3.1 8B Instruct needs ~8.1 GB VRAM. GTX 1080 Ti 11GB has 11.0 GB. With Q4_K_M quantization, expect ~59 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.
Select quantization to explore
Q4_K_M (Medium quality) — 8.1 GB, 58.5 tok/s, Runs well
8.1 GB required11.0 GB available
74% VRAM used
Fit status
Runs well
Decode
58.5 tok/s
TTFT
3308 ms
Safe context
65K
Memory
8.1 GB / 11.0 GB
Memory breakdown
Weights4.9 GB
KV Cache0.9 GB
Runtime1.2 GB
Headroom1.1 GB
See how fast it feels
See how fast it feelsMeta Llama 3.1 8B Instruct on GTX 1080 Ti 11GB
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: 58.5 tok/s decode · 3.3s TTFT (warm) · 146 tok/s prefill
What limits this setup
This setup is broadly balanced for this model.
Older PCIe generation
PCIe 3.0 is workable, but it compounds the penalty when you offload heavily or try to scale across multiple cards.
Best improvement path
Performance by workload
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | B | Runs well | 58.5 tok/s | 1805 ms | 65K |
| Coding | B | Runs well | 58.5 tok/s | 3308 ms | 65K |
| Agentic Coding | C | Tight fit | 58.5 tok/s | 4812 ms | 65K |
| Reasoning | B | Runs well | 58.5 tok/s | 3910 ms | 65K |
| RAG | C | Tight fit | 58.5 tok/s | 6015 ms | 65K |
Quantization options
How Meta Llama 3.1 8B Instruct (8B params) fits at each quantization level on GTX 1080 Ti 11GB (11.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 3.1 GB | Low | C51 |
Q3_K_S | 3 | 3.9 GB | Low | C52 |
NVFP4 | 4 | 4.5 GB | Medium | C53 |
Q4_K_M | 4 | 4.9 GB | Medium | C53 |
Q5_K_M | 5 | 5.8 GB | High | C53 |
Q6_KBest for your GPU | 6 | 6.6 GB | High | C52 |
Q8_0 | 8 | 8.6 GB | Very High | F0 |
F16 | 16 | 16.4 GB | Maximum | F0 |
Get started
Copy-paste commands to run Meta Llama 3.1 8B Instruct on your machine.
Run
lms load hf-bartowski--meta-llama-3-1-8b-instruct-gguf && lms server start升级选项
能流畅运行 Meta Llama 3.1 8B Instruct 的硬件
RTX 5070 12GB经济之选RTX 4070 Super 12GB最佳性价比12 GB VRAM (+1)504 GB/s (+20)
B
Raises estimated decode speed by about 36%.79.5 tok/s 解码
Raises estimated decode speed by about 36%.
~$599 MSRP
RTX 4070 12GBNVIDIA 升级12 GB VRAM (+1)504 GB/s (+20)
B
Raises estimated decode speed by about 32%.77.5 tok/s 解码
Raises estimated decode speed by about 32%.
~$599 MSRP
Frequently asked questions
Can GTX 1080 Ti 11GB run Meta Llama 3.1 8B Instruct?
Yes, GTX 1080 Ti 11GB can run Meta Llama 3.1 8B Instruct with a B grade (Runs well). Expected decode speed: 58.5 tok/s.
How much VRAM does Meta Llama 3.1 8B Instruct need?
Meta Llama 3.1 8B Instruct (8B parameters) requires approximately 8.1 GB of memory with Q4_K_M quantization.
What is the best quantization for Meta Llama 3.1 8B Instruct?
The recommended quantization for Meta Llama 3.1 8B Instruct is Q4_K_M, which balances quality and memory efficiency.
What speed will Meta Llama 3.1 8B Instruct run at on GTX 1080 Ti 11GB?
On GTX 1080 Ti 11GB, Meta Llama 3.1 8B Instruct achieves approximately 58.5 tokens per second decode speed with a time-to-first-token of 3308ms using Q4_K_M quantization.
Can GTX 1080 Ti 11GB run Meta Llama 3.1 8B Instruct for coding?
For coding workloads, Meta Llama 3.1 8B Instruct on GTX 1080 Ti 11GB receives a B grade with 58.5 tok/s and 65K context.
What context window can Meta Llama 3.1 8B Instruct use on GTX 1080 Ti 11GB?
On GTX 1080 Ti 11GB, Meta Llama 3.1 8B Instruct can safely use up to 65K tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.
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