Can I Run Cosmos 3 on NVIDIA GeForce RTX 5080?

Name: LLM Configurator — GPU VRAM Checker
Author: LLM Configurator

Autor: Jakub Rusinowski · Ostatnia aktualizacja: 21 lipca 2026

Yes, comfortably — you'll have ~8 GB of headroom running Cosmos 3 Edge at BF16 (8 GB, ~240 tok/s (est.)).

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Sprawdź cenę na Amazon — NVIDIA GeForce RTX 5080 16GB

NVIDIA GeForce RTX 5080 Specs

VRAM	16 GB
Memory Bandwidth	960 GB/s

Cosmos 3 Edge on the NVIDIA GeForce RTX 5080: VRAM by quantization

Quant	VRAM needed	Fits 16 GB?	Max context
F16	10.1 GB	✓ Yes	16K
Q8_0	6.3 GB	✓ Yes	16K
Q6_K	5.4 GB	✓ Yes	16K
Q5_K_M	4.9 GB	✓ Yes	16K
Q4_K_M	4.5 GB	✓ Yes	16K
Q3_K_M	3.8 GB	✓ Yes	16K
Q2_K	3.4 GB	✓ Yes	16K

VRAM needed assumes a 4K-token context with an f16 KV cache; “Max context” is the largest window that still fits in 16 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.

Cosmos 3 Sizes That Fit the NVIDIA GeForce RTX 5080

Cosmos 3 Edge

BF16 · 8 GB · ~240 tok/s (est.)

FAQ

Cosmos 3 on the NVIDIA GeForce RTX 5080 — does it fit?

Yes, comfortably — you'll have ~8 GB of headroom running Cosmos 3 Edge at BF16 (8 GB, ~240 tok/s (est.)).

Which Cosmos 3 variant fits best on the NVIDIA GeForce RTX 5080?

Cosmos 3 Edge at BF16 quantization (8 GB), estimated ~240 tokens/sec.

Cosmos 3 on Other GPUs

Popular Models on the NVIDIA GeForce RTX 5080

VRAM Tier

Best LLMs for 16 GB VRAM

Troubleshooting

Which GGUF quant should I download? (Q4 vs Q5 vs Q8)

Buying Guide

Best GPU Buyer Guide 2026

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