Can I Run Cogito v1 70B on AMD Radeon RX 9070 XT?
作者： Jakub Rusinowski · 最后更新： 2026年9月29日
No. Cogito v1 70B needs 45.7 GB at 8K context (42.3 GB weights + 3.4 GB KV cache/overhead) at Q4_K_M and the AMD Radeon RX 9070 XT has only 16 GB. No quantization we publish closes a gap that size.
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The numbers
| Model | Cogito v1 70B |
| Parameters | 70B |
| Quantization | Q4_K_M |
| VRAM needed (8K context) | 45.7 GB |
| AMD Radeon RX 9070 XT VRAM | 16 GB |
| Verdict | Does not fit |
Cogito v1 70B on the AMD Radeon RX 9070 XT: VRAM by quantization
| Quant | VRAM needed | Fits 16 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 143.5 GB | ✗ No | — | — |
| Q8_0 | 77.9 GB | ✗ No | — | — |
| Q6_K | 60.9 GB | ✗ No | — | — |
| Q5_K_M | 53.1 GB | ✗ No | — | — |
| Q4_K_M | 45.7 GB | ✗ No | — | — |
| Q3_K_M | 33.3 GB | ✗ No | — | — |
| Q2_K | 26.5 GB | ✗ No | — | — |
Assumes an 8K-token context with an f16 KV cache. A longer window needs more; a quantized KV cache needs less. “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.
Context costs VRAM too. At Q4_K_M on the AMD Radeon RX 9070 XT: 8K 45.7 GB ✗ · 32K 53.8 GB ✗ · 128K 86 GB ✗. Past 8K it no longer fits 16 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
What to do next
Either step down to a smaller size in this family, or move to a NVIDIA RTX 6000 Ada Generation (48 GB), the card with the least memory we track that holds it.
No compatible GPU? Cogito v1 on 8 GB of system RAM, CPU only: runs.
Cheapest card we track with enough VRAM for Cogito v1 70B:
Cogito v1 70B needs ~46 GB but this GPU has 16 GB. Rent a A100 (80 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.
Other Cogito v1 sizes on the AMD Radeon RX 9070 XT
- Cogito v1 32B — runs at a lower quant (22.3 GB)
- Cogito v1 14B — runs (10.9 GB)
- Cogito v1 8B — runs (6.7 GB)
- Cogito v1 3B — runs (3.6 GB)
Cogito v1 70B on nearby hardware
- Intel Arc B580 (12 GB) — does not fit
- AMD Radeon RX 7900 XT (20 GB) — does not fit
All Cogito v1 sizes on the AMD Radeon RX 9070 XT | Cogito v1 70B model page | AMD Radeon RX 9070 XT GPU page | VRAM calculator | Check your hardware