GPUs for on-prem AI / AMD

AMD Ryzen AI Max+ 395 128GB system for LLMs

Mini PCs (Framework Desktop, HP Z2 Mini G1a and others) with 128GB shared memory, a configurable share of which goes to the Radeon 8060S iGPU; good for single-user 70B quantized models. Bandwidth derived from 256-bit LPDDR5x-8000; AMD publishes no GPU BF16 figure; 45-120W cTDP. Most users run llama.cpp (Vulkan or ROCm). Price is an indicative 2026 street range for one unit, not a quote.

Memory
128 GB LPDDR5x-8000 unified
Bandwidth
256 GB/s
BF16 dense
n/a
FP8 dense
no
Power
120 W

desktop system | PCIe Gen4 only | ROCm | indicative price $2,000-3,000

Which models fit, and how many cards

Planning estimates. 4-bit column: one user at 8K context. FP8 column: 10 users at once at 16K context.

ModelSize4-bit: cards4-bit: tok/sFP8, 10 users: cardsFP8: tok/s per user
Step-3.7-Flash198B / 11B1182 (multi-node)14
Qwen3.8-Flash-Next180B / 6B1322 (multi-node)26
Mistral Medium 3.5 128B128B122 (multi-node)2
Qwen3.5-122B-A10B125B / 10B1202 (multi-node)17
Ling-3.0-flash124B / 5.1B1382 (multi-node)33
NVIDIA Nemotron 3 Super 120B-A12B120B / 12B1172 (multi-node)15
Mistral Small 4 119B A6B (2603)119B / 6.5B1302 (multi-node)25
gpt-oss-120b117B / 5.1B1372 (multi-node)28
Command A (03-2025)111B122 (multi-node)2
Llama 4 Scout 17B-16E Instruct109B / 17B1112 (multi-node)8
Qwen3-Coder-Next79.7B / 3B160127
Llama 3.3 70B Instruct70B1412
Qwen3.6-35B-A3B36B / 3B161129
Qwen3-32B32.8B1813
Olmo 3.1 32B Think32B1814
GLM-4.7-Flash31.2B / 3B158121
Gemma 4 31B IT30.7B1814
Qwen3-30B-A3B-Instruct-250730.5B / 3.3B152115
Granite 4.2 30B30B1914
NVIDIA Nemotron 3.5 Lightning 30B-A3B30B / 3B162134
Qwen3.8-27B27.8B11015
Gemma 3 27B IT27B11015
Gemma 4 26B A4B IT25.2B / 3.8B146117
Mistral Small 3.2 24B Instruct 250624B11115
Magistral Small 1.2 (2509)24B11115
Devstral Small 2 24B Instruct 251224B11115
gpt-oss-20b21B / 3.6B151124
Phi-414B11817
Gemma 4 12B IT11.95B12119
Qwen3.5-9B9.7B127114
Qwen3-VL-8B-Instruct8.8B128110
Granite 4.2 8B8B130110
Llama 3.1 8B Instruct8B131111
Qwen3.5-397B-A17B403B / 17B2 (multi-node)194 (multi-node)19
Llama 4 Maverick 17B-128E Instruct400B / 17B2 (multi-node)194 (multi-node)14
Trinity Large Thinking398B / 13B2 (multi-node)234 (multi-node)18
GLM-5.3-Flash320B / 18B2 (multi-node)193 (multi-node)15
MiMo-V2.6-Flash-RL309B / 15B2 (multi-node)223 (multi-node)16
Hy3295B / 21B2 (multi-node)153 (multi-node)8
Command A+ (05-2026)218B / 25B2 (multi-node)142 (multi-node)7
MiniMax-M3428B / 23B3 (multi-node)194 (multi-node)13
DeepSeek-V4.1-Flash-1017748B / 16B4 (multi-node)367 (multi-node)32
GLM-5.3744B / 40B4 (multi-node)157 (multi-node)13
Mistral Large 3 675B Instruct 2512675B / 41B4 (multi-node)156 (multi-node)11
DeepSeek-V3.2671B / 37B4 (multi-node)176 (multi-node)12
Kimi-K2.61000B / 32B5 (multi-node)219 (multi-node)16
Kimi-K2.7-Code1000B / 32B5 (multi-node)219 (multi-node)16
Muse Spark Open 816B-A42B816B / 42B5 (multi-node)178 (multi-node)14
MiMo-V2.6-Pro-RL1020B / 42B6 (multi-node)1910 (multi-node)14
DeepSeek-V4-Pro-08131600B / 49B8 (multi-node)2215 (multi-node)17
Qwen3.8-2.4T-A95B2446B / 95B13 (multi-node)1522 (multi-node)13
Kimi-K32800B / 104B14 (multi-node)1425 (multi-node)14

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Questions

What is the largest model that fits on one AMD Ryzen AI Max+ 395 128GB system?

Of the models we track, Step-3.7-Flash (198B total, 11B active) fits on a single 128 GB card in 4-bit with one user at 8K context. More users or longer context need memory for the KV cache, so leave headroom.

How fast is AMD Ryzen AI Max+ 395 128GB system for LLM inference?

Generation speed is mostly set by memory bandwidth: 256 GB/s here. Each token reads the active weights once, so a model with 8 GB of active weights tops out near 32 tokens per second per stream before efficiency losses; batching many users raises total throughput.

Is AMD Ryzen AI Max+ 395 128GB system a good choice for on-prem AI?

Mini PCs (Framework Desktop, HP Z2 Mini G1a and others) with 128GB shared memory, a configurable share of which goes to the Radeon 8060S iGPU; good for single-user 70B quantized models. Bandwidth derived from 256-bit LPDDR5x-8000; AMD publishes no GPU BF16 figure; 45-120W cTDP. Most users run llama.cpp (Vulkan or ROCm). Price is an indicative 2026 street range for one unit, not a quote.