Written by Jakub Rusinowski · Last updated July 21, 2026
Only with offload — Cosmos 3 spills onto CPU/system RAM on the AMD Radeon RX 9060 XT 8GB (8 GB), so expect a large speed penalty.
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| VRAM | 8 GB |
| Memory Bandwidth | 320 GB/s |
| Quant | VRAM needed | Fits 8 GB? | Max context |
|---|---|---|---|
| F16 | 9.3 GB | ✗ No | — |
| Q8_0 | 5.5 GB | ✓ Yes | 16K |
| Q6_K | 4.5 GB | ✓ Yes | 16K |
| Q5_K_M | 4.1 GB | ✓ Yes | 16K |
| Q4_K_M | 3.7 GB | ✓ Yes | 16K |
| Q3_K_M | 3 GB | ✓ Yes | 16K |
| Q2_K | 2.6 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 8 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
Every Cosmos 3 variant requires more VRAM than the AMD Radeon RX 9060 XT 8GB provides (8 GB).
NVIDIA GeForce RTX 3080 (10GB) (10 GB VRAM).
Cosmos 3 needs ~8 GB but this GPU has 8 GB. Rent a RTX 4090 (24 GB)-class GPU by the hour instead of buying one:
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
Only with offload — Cosmos 3 spills onto CPU/system RAM on the AMD Radeon RX 9060 XT 8GB (8 GB), so expect a large speed penalty.
The NVIDIA GeForce RTX 3080 (10GB) (10 GB VRAM) is the cheapest upgrade that fits it.
| Size | VRAM | Verdict | Speed |
|---|---|---|---|
| Cosmos 3 Super | 128.0 GB | Does not fit | — |
| Cosmos 3 Nano | 32.0 GB | Does not fit | — |
| Cosmos 3 Edge | 8.0 GB | Runs at Q8_0 | — |
← Can I Run It? | Cosmos 3 Model Page | AMD Radeon RX 9060 XT 8GB GPU Page | Check Your Hardware