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estimate

Can I run Llama 3.1 8B on an RTX 5080?

Yes, fully in VRAM (estimate)

Can I run Llama 3.1 8B on an RTX 5080? Yes, fully in VRAM (estimate). About 6.7 GB at Q4_K_M (estimate).

Updated . The later of the hardware price date and the formula date.

Llama 3.1 8B on RTX 5080, formula estimate
QuantContextWeightsKVOverheadTotalUsableFitEst. tok/s
Q4 Q4_K_M8,192 tokens4.8 GB estimate1.1 GB estimate0.8 GB estimate6.7 GB estimate15.4 GB estimatefull124 tok/s estimate
Q5 Q5 (~0.71 bytes/param)8,192 tokens5.7 GB estimate1.1 GB estimate0.8 GB estimate7.6 GB estimate15.4 GB estimatefull108 tok/s estimate
Q8 Q88,192 tokens8.6 GB estimate1.1 GB estimate0.8 GB estimate10.5 GB estimate15.4 GB estimatefull76 tok/s estimate
FP16 FP168,192 tokens16.1 GB estimate1.1 GB estimate0.8 GB estimate17.9 GB estimate15.4 GB estimateno—
Q4, longer context32,768 tokens4.8 GB estimate4.3 GB estimate0.8 GB estimate9.9 GB estimate15.4 GB estimatefull81 tok/s estimate

Formula estimate, not a benchmark. Method →

Cheapest catalog option that fits at Q4

GeForce RTX 3060 12GB, used (median of sold listings), €257, dated 2026-10-16. No buy link.

This hardware

$1,468€1,311

new (lowest in-stock EU)

price as of 17 Oct 2026

GPU PRIX

Lowest in-stock board in the table on 17 Oct 2026: €1,311, ASUS Prime GeForce RTX 5080, in stock. The same page's header current low was €1,328, last updated Oct 17, 2026. 16 GB GDDR7 and 360 W total graphics power are on NVIDIA's RTX 5080 spec page (https://www.nvidia.com/en-us/geforce/graphics-cards/50-series/rtx-5080/). 960 GB/sec is the RTX 5080 column on NVIDIA's GeForce compare page (https://www.nvidia.com/en-us/geforce/graphics-cards/compare/). The product spec table that was fetched did not print a GB/s row.

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Llama 3.1 8B on RTX 5080

[![Llama 3.1 8B Q4 on RTX 5080: fits ✓ · est. 124 tok/s (estimate)](https://localllmrig.com/badge/llama-3.1-8b/rtx-5080.svg)](https://localllmrig.com/can-i-run/llama-3.1-8b/rtx-5080?utm_source=badge)

Questions

Can I run Llama 3.1 8B on an RTX 5080?
Yes, fully in VRAM (estimate).
How much memory does Llama 3.1 8B need at Q4?
About 6.7 GB at 8,192 tokens (estimate): 4.8 GB weights, 1.1 GB KV cache, 0.8 GB overhead.
How fast is Llama 3.1 8B on RTX 5080 (estimate)?
About 124 tok/s at Q4 (estimate, not a benchmark).
Llama 3.1 8B on RTX 5080 (estimate) · localLLMrig