Can I Run Cosmos 3 on AMD Radeon RX 9060 XT 8GB?
Written by Jakub Rusinowski · Last updated July 21, 2026
Only with offload — Cosmos 3 Edge at BF16 needs 9.7 GB at 8K context (8 GB weights + 1.7 GB KV cache/overhead) against the AMD Radeon RX 9060 XT 8GB's 8 GB, so part of it spills onto CPU/system RAM and speed drops sharply.
Get a personalized upgrade path →
or compare on Vast.ai from $0.35/hr (typical low · varies)
As an Amazon Associate we earn from qualifying purchases. Cloud GPU links are referral links — we may earn a commission at no extra cost to you.
AMD Radeon RX 9060 XT 8GB Specs
| VRAM | 8 GB |
| Memory Bandwidth | 320 GB/s |
Cosmos 3 Edge on the AMD Radeon RX 9060 XT 8GB: VRAM by quantization
| Quant | VRAM needed | Fits 8 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 9.7 GB | ✗ No | — | — |
| Q8_0 | 6 GB | ✓ Yes | 16K | — |
| Q6_K | 5 GB | ✓ Yes | 16K | — |
| Q5_K_M | 4.5 GB | ✓ Yes | 16K | — |
| Q4_K_M | 4.1 GB | ✓ Yes | 16K | — |
| Q3_K_M | 3.4 GB | ✓ Yes | 16K | — |
| Q2_K | 3 GB | ✓ Yes | 16K | — |
Assumes an 8K-token context with an f16 KV cache, on an estimated architecture — this model publishes no config we can read. A longer window needs more; a quantized KV cache needs less. “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.
Context costs VRAM too. At BF16 on the AMD Radeon RX 9060 XT 8GB: 8K 9.7 GB ✗ · 16K 10.6 GB ✗. Past 8K it no longer fits 8 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
No compatible GPU? Cosmos 3 Edge on 8 GB of system RAM, CPU only: runs, but it is tight.
Why It Does Not Fit
Every Cosmos 3 variant requires more VRAM than the AMD Radeon RX 9060 XT 8GB provides (8 GB).
Nearest GPU That Fits
NVIDIA GeForce RTX 3080 (10GB) (10 GB VRAM).
Cosmos 3 needs ~10 GB but this GPU has 8 GB. Rent a RTX 4090 (24 GB)-class GPU by the hour instead of buying one:
Affiliate links — we may earn a commission if you sign up, at no extra cost to you.
Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
FAQ
Does the AMD Radeon RX 9060 XT 8GB have enough VRAM for Cosmos 3?
Only with offload — Cosmos 3 Edge at BF16 needs 9.7 GB at 8K context (8 GB weights + 1.7 GB KV cache/overhead) against the AMD Radeon RX 9060 XT 8GB's 8 GB, so part of it spills onto CPU/system RAM and speed drops sharply.
Which GPU can actually run Cosmos 3?
The NVIDIA GeForce RTX 3080 (10GB) (10 GB VRAM) is the cheapest upgrade that fits it.
Every Cosmos 3 size on the AMD Radeon RX 9060 XT 8GB
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| Cosmos 3 Super | 131.1 GB | Does not fit | — |
| Cosmos 3 Nano | 34.2 GB | Runs at Q2_K | — |
| Cosmos 3 Edge | 9.7 GB | Runs at Q8_0 | — |
Cosmos 3 on Other GPUs
- Cosmos 3 on NVIDIA GeForce RTX 5060 Ti 8GB
- Cosmos 3 on NVIDIA GeForce RTX 5060
- Cosmos 3 on NVIDIA GeForce RTX 4060
- Cosmos 3 on NVIDIA GeForce RTX 3070 Ti
- Cosmos 3 on NVIDIA GeForce RTX 3070
Popular Models on the AMD Radeon RX 9060 XT 8GB
- DeepSeek R1 on AMD Radeon RX 9060 XT 8GB
- Qwen 3 on AMD Radeon RX 9060 XT 8GB
- Qwen 2.5 Family on AMD Radeon RX 9060 XT 8GB
VRAM Tier
Troubleshooting
- Ollama: "model requires more system memory than is available"
- Out of memory at long context (the KV cache, not the weights)
Buying Guide
← Can I Run It? | Cosmos 3 Model Page | AMD Radeon RX 9060 XT 8GB GPU Page | VRAM calculator | Check Your Hardware