Can I Run Cosmos 3 on AMD Radeon RX 7900 XT?

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

Autor: Jakub Rusinowski · Ostatnia aktualizacja: 21 lipca 2026

Yes, comfortably — you'll have ~12 GB of headroom running Cosmos 3 Edge at BF16 (8 GB, ~200 tok/s (est.)).

Ujawnienie afiliacyjne: Niektóre odnośniki na tej stronie to linki afiliacyjne — jeśli dokonasz zakupu za ich pośrednictwem, LLM Configurator może otrzymać prowizję bez dodatkowych kosztów dla Ciebie. Jako uczestnik programu Amazon Associates, LLM Configurator zarabia na kwalifikujących się zakupach.

Sprawdź cenę na Amazon — AMD Radeon RX 7900 XT 20GB

AMD Radeon RX 7900 XT Specs

VRAM	20 GB
Memory Bandwidth	800 GB/s

Cosmos 3 Edge on the AMD Radeon RX 7900 XT: VRAM by quantization

Quant	VRAM needed	Fits 20 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 20 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 AMD Radeon RX 7900 XT

Cosmos 3 Edge

BF16 · 8 GB · ~200 tok/s (est.)

FAQ

Can I run Cosmos 3 on the AMD Radeon RX 7900 XT?

Yes, comfortably — you'll have ~12 GB of headroom running Cosmos 3 Edge at BF16 (8 GB, ~200 tok/s (est.)).

What's the best Cosmos 3 size for the AMD Radeon RX 7900 XT?

Cosmos 3 Edge at BF16 quantization (8 GB), estimated ~200 tokens/sec.

Cosmos 3 on Other GPUs

Popular Models on the AMD Radeon RX 7900 XT

VRAM Tier

Best LLMs for 20 GB VRAM

Troubleshooting

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

Buying Guide

Best GPU Buyer Guide 2026

← Can I Run It? | Cosmos 3 Model Page | AMD Radeon RX 7900 XT GPU Page | Check Your Hardware