Can I Run Cogito v1 on AMD Ryzen AI Max+ 395?
Written by Jakub Rusinowski · Last updated July 12, 2026
Yes, comfortably — Cogito v1 70B at Q4_K_M needs 45.7 GB at 8K context (42.3 GB weights + 3.4 GB KV cache/overhead), leaving ~82.3 GB of the AMD Ryzen AI Max+ 395's 128 GB, at ~4 tok/s (est.), with room for up to 128K context.
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AMD Ryzen AI Max+ 395 Specs
| VRAM | 128 GB |
| Memory Bandwidth | 256 GB/s |
Cogito v1 70B on the AMD Ryzen AI Max+ 395: VRAM by quantization
| Quant | VRAM needed | Fits 128 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 143.5 GB | ✗ No | — | — |
| Q8_0 | 77.9 GB | ✓ Yes | 128K | — |
| Q6_K | 60.9 GB | ✓ Yes | 128K | — |
| Q5_K_M | 53.1 GB | ✓ Yes | 128K | — |
| Q4_K_M | 45.7 GB | ✓ Yes | 128K | — |
| Q3_K_M | 33.3 GB | ✓ Yes | 128K | — |
| Q2_K | 26.5 GB | ✓ Yes | 128K | — |
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 128 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 Ryzen AI Max+ 395: 8K 45.7 GB · 32K 53.8 GB · 128K 86 GB. Every window this model publishes still fits 128 GB.
No compatible GPU? Cogito v1 on 8 GB of system RAM, CPU only: runs.
Cogito v1 Sizes That Fit the AMD Ryzen AI Max+ 395 (at 8K context)
| Cogito v1 70B | Q4_K_M · 45.7 GB at 8K context · ~4 tok/s (est.) |
| Cogito v1 32B | Q4_K_M · 22.3 GB at 8K context · ~8 tok/s (est.) |
| Cogito v1 14B | Q4_K_M · 10.9 GB at 8K context · ~17 tok/s (est.) |
| Cogito v1 8B | Q4_K_M · 6.7 GB at 8K context · ~28 tok/s (est.) |
| Cogito v1 3B | Q4_K_M · 3.6 GB at 8K context · ~58 tok/s (est.) |
Cogito v1 needs ~46 GB but this GPU has 128 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.
FAQ
Is the AMD Ryzen AI Max+ 395 enough to run Cogito v1 locally?
Yes, comfortably — Cogito v1 70B at Q4_K_M needs 45.7 GB at 8K context (42.3 GB weights + 3.4 GB KV cache/overhead), leaving ~82.3 GB of the AMD Ryzen AI Max+ 395's 128 GB, at ~4 tok/s (est.), with room for up to 128K context.
What's the best Cogito v1 size for the AMD Ryzen AI Max+ 395?
Cogito v1 70B at Q4_K_M quantization needs 45.7 GB at 8K context (42.3 GB weights + 3.4 GB KV cache/overhead), estimated ~4 tokens/sec, up to 128K context.
Every Cogito v1 size on the AMD Ryzen AI Max+ 395
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| Cogito v1 70B | 45.7 GB | Runs | ~4 tok/s |
| Cogito v1 32B | 22.3 GB | Runs | ~8 tok/s |
| Cogito v1 14B | 10.9 GB | Runs | ~17 tok/s |
| Cogito v1 8B | 6.7 GB | Runs | ~28 tok/s |
| Cogito v1 3B | 3.6 GB | Runs | ~58 tok/s |
Cogito v1 on Other GPUs
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