Ryzen AI Max+ 395 for Local LLMs: VRAM and Model Fit
128 GB LPDDR5x-8000 unified memory is unified memory, not discrete VRAM added to RAM: 137,438,953,472 bytes (128.00 GiB). The default system reserve is 34,359,738,368 bytes (32.00 GiB), and the net is 103,079,215,104 bytes (96.00 GiB).
Ryzen AI Max+ 395: 128.00 GiB gross, default reserve 32.00 GiB, net calculator budget 96.00 GiB. Max. Memory 128 GB on AMD's spec page is treated as 128 GiB (2^30 bytes). The 128 GB machines can give the GPU at most 96 GB as Variable Graphics Memory (AMD FAQ), so the default reserve is the remaining 32 GiB. Unified memory is a shared CPU/GPU pool; host RAM is not added again.
This result is an estimate, not a measured trace.Unified memory
Models for this device
Gross vs reserve vs net budget
- AMDAMD Ryzen AI Max+ 395 128GB · unified-device
- Memory kindunified-memory
- Marketed128 GB LPDDR5x-8000 unified memory
- Gross137,438,953,472 bytes = 128.00 GiB
- Default reserve34,359,738,368 bytes = 32.00 GiB
- Net budget103,079,215,104 bytes = 96.00 GiB
The reserve is a configurable calculator assumption, not a measured desktop tax. Headless systems can lower it after measuring baseline board usage.
Catalog fit at 8,192 tokens
Each row is the same automatic pick as the calculator at 8,192 tokens: the highest precision at or above 3 bits per weight that fits. A file under that floor stays available for a manual choice and is not the automatic row. Concurrent sequences = 1, FP16 KV. Fit and software support are separate. Format compatibility is not a verified run.
Likely fits (65)
| Model | Quantization | Estimate | Fit | Software compatibility | Evidence |
|---|---|---|---|---|---|
| Qwen2.5-0.5B-Instruct | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 0.85 GiB–1.24 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Gemma 3 1B IT | GGUF Q4_0 (Google QAT) gguf-q4_0 · 8192 tokens | 1.10 GiB–1.50 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-0.6B | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 1.60 GiB–2.04 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-1.5B-Instruct | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 2.11 GiB–2.53 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-Coder-1.5B-Instruct | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 2.11 GiB–2.53 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Llama 3.2 1B Instruct | Official BF16 safetensors bf16 · 8192 tokens | 2.68 GiB–3.12 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-1.7B | GGUF Q8_0 gguf-q8_0 · 8192 tokens | 2.71 GiB–3.18 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-1.7B-Base | GGUF Q8_0 (mradermacher) gguf-q8_0 · 8192 tokens | 2.71 GiB–3.18 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Gemma 3 4B IT | GGUF Q4_0 (Google QAT) gguf-q4_0 · 8192 tokens | 3.33 GiB–3.79 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| SmolLM2-1.7B-Instruct | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 3.32 GiB–3.83 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-VL-3B-Instruct | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 3.47 GiB–3.92 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-3B-Instruct | GGUF Q8_0 gguf-q8_0 · 8192 tokens | 3.77 GiB–4.24 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-Coder-3B-Instruct | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 3.77 GiB–4.24 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Phi-4-mini-instruct | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 4.93 GiB–5.45 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-4B | GGUF Q8_0 gguf-q8_0 · 8192 tokens | 5.24 GiB–5.77 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-4B-Instruct-2507 | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 5.24 GiB–5.77 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-VL-4B-Instruct | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 5.24 GiB–5.77 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Llama 3.2 3B Instruct | Official BF16 safetensors bf16 · 8192 tokens | 6.98 GiB–7.54 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Phi-3.5-mini-instruct | GGUF Q8_0 (bartowski) gguf-q8_0 · 8192 tokens | 6.91 GiB–7.57 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2-7B-Instruct | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 8.10 GiB–8.66 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-VL-7B-Instruct | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 8.10 GiB–8.66 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| OpenMath-Nemotron-7B | GGUF Q8_0 (mradermacher) gguf-q8_0 · 8192 tokens | 8.10 GiB–8.66 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| DeepSeek-R1-Distill-Qwen-7B | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 8.10 GiB–8.66 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-7B-Instruct | GGUF Q8_0 gguf-q8_0 · 8192 tokens | 8.10 GiB–8.66 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-Coder-7B-Instruct | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 8.10 GiB–8.66 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-Coder-7B | GGUF Q8_0 (mradermacher) gguf-q8_0 · 8192 tokens | 8.10 GiB–8.66 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Mistral-7B-Instruct-v0.3 | GGUF Q8_0 (bartowski) gguf-q8_0 · 8192 tokens | 8.30 GiB–8.89 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Gemma 3 12B IT | GGUF Q4_0 (Google QAT) gguf-q4_0 · 8192 tokens | 8.46 GiB–9.04 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| DeepSeek-R1-Distill-Llama-8B | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 9.08 GiB–9.68 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-Math-7B-Instruct | GGUF Q8_0 (bartowski) gguf-q8_0 · 8192 tokens | 8.10 GiB–9.96 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-8B | GGUF Q8_0 gguf-q8_0 · 8192 tokens | 9.36 GiB–9.98 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-8B-Base | GGUF Q8_0 (mradermacher) gguf-q8_0 · 8192 tokens | 9.36 GiB–9.98 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-VL-8B-Instruct | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 9.36 GiB–9.98 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| granite-3.3-8b-instruct | GGUF Q8_0 (IBM) gguf-q8_0 · 8192 tokens | 9.46 GiB–10.09 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| GLM-4-9B-0414 | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 9.75 GiB–10.33 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| gpt-oss-20b | MXFP4 safetensors mxfp4 · 8192 tokens | 13.13 GiB–13.78 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Mistral-Nemo-Instruct-2407 | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 13.50 GiB–14.21 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-14B | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 16.00 GiB–16.75 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Llama 3.1 8B Instruct | Official BF16 safetensors bf16 · 8192 tokens | 16.08 GiB–16.83 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| phi-4 | GGUF Q8_0 (Microsoft) gguf-q8_0 · 8192 tokens | 16.20 GiB–16.97 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Phi-4-reasoning | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 16.20 GiB–16.97 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| OpenMath-Nemotron-14B | GGUF Q8_0 (mradermacher) gguf-q8_0 · 8192 tokens | 16.25 GiB–17.02 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-Coder-14B-Instruct | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 16.25 GiB–17.02 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-14B-Instruct | GGUF Q8_0 gguf-q8_0 · 8192 tokens | 16.25 GiB–17.02 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Gemma 3 27B IT | GGUF Q4_0 (Google QAT) gguf-q4_0 · 8192 tokens | 17.20 GiB–17.97 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| DeepSeek-V2-Lite-Chat | GGUF Q8_0 (mradermacher) gguf-q8_0 · 8192 tokens | 15.92 GiB–19.16 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Mistral-Small-24B-Instruct-2501 | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 24.71 GiB–25.64 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Drama 3 | Unofficial int4 W4A16 (GPTQ-Marlin, with codec) int4-w4a16-community · 8192 tokens | 22.67 GiB–27.03 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-30B-A3B | GGUF Q8_0 gguf-q8_0 · 8192 tokens | 31.13 GiB–32.16 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-30B-A3B-Instruct-2507 | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 31.13 GiB–32.16 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-VL-30B-A3B-Instruct | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 31.13 GiB–32.16 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3.8-27B | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 27.83 GiB–33.10 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-32B | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 34.55 GiB–35.72 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| OpenMath-Nemotron-32B | GGUF Q8_0 (mradermacher) gguf-q8_0 · 8192 tokens | 34.55 GiB–35.72 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| DeepSeek-R1-Distill-Qwen-32B | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 34.55 GiB–35.72 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| QwQ-32B | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 34.55 GiB–35.72 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-Coder-32B-Instruct | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 34.55 GiB–35.72 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-VL-32B-Instruct | GGUF Q8_0 (mradermacher) gguf-q8_0 · 8192 tokens | 34.55 GiB–35.72 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-32B-Instruct | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 34.55 GiB–35.72 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Mixtral-8x7B-Instruct-v0.1 | GGUF Q8_0 (mradermacher) gguf-q8_0 · 8192 tokens | 47.34 GiB–48.71 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| gpt-oss-120b | MXFP4 safetensors mxfp4 · 8192 tokens | 61.18 GiB–62.79 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Llama-3.1-Nemotron-70B-Instruct-HF | GGUF Q8_0 (bartowski) gguf-q8_0 · 8192 tokens | 72.45 GiB–74.40 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen2.5-72B-Instruct | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 74.83 GiB–76.82 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| GLM-4.5-Air | GGUF Q5_K_M (Unsloth) gguf-q5_k_m · 8192 tokens | 79.35 GiB–81.38 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-Next-80B-A3B-Instruct | GGUF Q8_0 (Qwen) gguf-q8_0 · 8192 tokens | 79.86 GiB–81.87 GiB | Likely fits | Not verified | This result is an estimate, not a measured trace. |
Insufficient memory (21)
| Model | Quantization | Estimate | Fit | Software compatibility | Evidence |
|---|---|---|---|---|---|
| Qwen3.8-Flash-Next | GGUF Q4_K_M (bartowski) gguf-q4_k_m · 8192 tokens | 111.75 GiB–131.53 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| MiniMax-M2 | GGUF Q4_K_M (Unsloth) gguf-q4_k_m · 8192 tokens | 130.90 GiB–133.99 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-235B-A22B | GGUF Q4_K_M (Qwen) gguf-q4_k_m · 8192 tokens | 133.99 GiB–137.11 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| Qwen3-235B-A22B-Instruct-2507 | GGUF Q4_K_M (Unsloth) gguf-q4_k_m · 8192 tokens | 133.99 GiB–137.11 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| Llama 3.3 70B Instruct | Official BF16 safetensors bf16 · 8192 tokens | 134.04 GiB–137.22 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| DeepSeek-V4-Flash-0731 | FP8 safetensors fp8 · 8192 tokens | 156.21 GiB–183.71 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| GLM-4.6 | GGUF Q4_K_M (Unsloth) gguf-q4_k_m · 8192 tokens | 203.78 GiB–208.37 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| GLM-4.5 | GGUF Q4_K_M (Unsloth) gguf-q4_k_m · 8192 tokens | 204.59 GiB–209.20 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| MiniMax-M3 | GGUF Q4_K_M (bartowski) gguf-q4_k_m · 8192 tokens | 244.40 GiB–249.71 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| GLM-5.3-Flash | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 318.04 GiB–373.58 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| DeepSeek-V3 | GGUF Q4_K_M (Unsloth) gguf-q4_k_m · 8192 tokens | 377.32 GiB–443.15 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| DeepSeek-R1 | GGUF Q4_K_M (Unsloth) gguf-q4_k_m · 8192 tokens | 377.32 GiB–443.15 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| DeepSeek-V3-0324 | GGUF Q4_K_M (Unsloth) gguf-q4_k_m · 8192 tokens | 377.32 GiB–443.15 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| DeepSeek-R1-0528 | GGUF Q4_K_M (Unsloth) gguf-q4_k_m · 8192 tokens | 377.79 GiB–443.71 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| DeepSeek-V3.1 | GGUF Q4_K_M (Unsloth) gguf-q4_k_m · 8192 tokens | 378.22 GiB–444.21 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| Muse Spark Open | Official NVFP4 safetensors nvfp4 · 8192 tokens | 498.47 GiB–508.91 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| DeepSeek-V4.1-Flash | FP8 safetensors fp8 · 8192 tokens | 475.99 GiB–558.80 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| Ling-3.1-flash | Official FP8 safetensors (F8_E4M3 experts + BF16 remainder) fp8 · 8192 tokens | 535.11 GiB–628.26 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| Kimi-K2-Instruct | GGUF Q4_K_M (Unsloth) gguf-q4_k_m · 8192 tokens | 578.81 GiB–679.50 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| Kimi-K2-Thinking | GGUF Q4_K_M (Unsloth) gguf-q4_k_m · 8192 tokens | 579.24 GiB–680.01 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
| GLM-5.3 | GGUF Q8_0 (Unsloth) gguf-q8_0 · 8192 tokens | 747.13 GiB–876.98 GiB | Insufficient memory | Not verified | This result is an estimate, not a measured trace. |
Measured vs planned evidence on this SKU
This page is an estimate unless a matching runtime-resident measurement is attached.
Related pages
Sources
- AMD Ryzen AI Max+ 395 specifications — System Memory Type 256-bit LPDDR5x; Max. Memory 128 GB; Max Memory Speed LPDDR5x-8000; Graphics Model Radeon 8060S; Graphics Core Count 40; Default TDP 55 W, cTDP 45-120 W
- AMD FAQ: Variable Graphics Memory — The 128 GB Ryzen AI Max+ 395 machine can dedicate up to 96 GB to the iGPU with Variable Graphics Memory (BIOS-level; Adrenalin 25.8.1 or later on Windows). That memory is removed from system RAM.
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