GPUs for on-prem AI / NVIDIA

NVIDIA A100 40GB PCIe for LLMs

Previous-generation workhorse, now mostly sold used or refurbished; no FP8. NVIDIA lists 312 TFLOPS BF16 dense (624 with sparsity). Price is an indicative 2026 street range for one unit, not a quote.

Memory
40 GB HBM2
Bandwidth
1,555 GB/s
BF16 dense
312 TFLOPS
FP8 dense
no
Power
250 W

PCIe | NVLink bridge 600 GB/s (2 GPUs) | CUDA | indicative price $4,000-8,000

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
Qwen3.6-35B-A3B36B / 3B12522186
Qwen3-32B32.8B146235
Olmo 3.1 32B Think32B147239
GLM-4.7-Flash31.2B / 3B12462151
Gemma 4 31B IT30.7B148236
Qwen3-30B-A3B-Instruct-250730.5B / 3.3B12252119
Granite 4.2 30B30B150237
NVIDIA Nemotron 3.5 Lightning 30B-A3B30B / 3B12551162
Qwen3.8-27B27.8B155129
Gemma 3 27B IT27B155245
Gemma 4 26B A4B IT25.2B / 3.8B1208192
Mistral Small 3.2 24B Instruct 250624B161248
Magistral Small 1.2 (2509)24B161248
Devstral Small 2 24B Instruct 251224B161248
gpt-oss-20b21B / 3.6B12241123
Phi-414B196139
Gemma 4 12B IT11.95B1111152
Qwen3.5-9B9.7B1135175
Qwen3-VL-8B-Instruct8.8B1140157
Granite 4.2 8B8B1150157
Llama 3.1 8B Instruct8B1151162
NVIDIA Nemotron 3 Super 120B-A12B120B / 12B2116498
Mistral Small 4 119B A6B (2603)119B / 6.5B21944164
gpt-oss-120b117B / 5.1B22204174
Command A (03-2025)111B225424
Llama 4 Scout 17B-16E Instruct109B / 17B297472
Qwen3-Coder-Next79.7B / 3B22614195
Llama 3.3 70B Instruct70B237432
Command A+ (05-2026)218B / 25B41148102
Step-3.7-Flash198B / 11B41688139
Qwen3.8-Flash-Next180B / 6B42068168
Mistral Medium 3.5 128B128B436833
Qwen3.5-122B-A10B125B / 10B41734124
Ling-3.0-flash124B / 5.1B42284183
MiniMax-M3428B / 23B812416 (multi-node)76
Qwen3.5-397B-A17B403B / 17B813816 (multi-node)85
Llama 4 Maverick 17B-128E Instruct400B / 17B815116 (multi-node)89
Trinity Large Thinking398B / 13B814616 (multi-node)84
GLM-5.3-Flash320B / 18B815516 (multi-node)101
MiMo-V2.6-Flash-RL309B / 15B815916 (multi-node)100
Hy3295B / 21B811016 (multi-node)60
Muse Spark Open 816B-A42B816B / 42B16 (multi-node)7824 (multi-node)66
DeepSeek-V4.1-Flash-1017748B / 16B16 (multi-node)12624 (multi-node)111
GLM-5.3744B / 40B16 (multi-node)6824 (multi-node)58
Mistral Large 3 675B Instruct 2512675B / 41B16 (multi-node)7924 (multi-node)68
DeepSeek-V3.2671B / 37B16 (multi-node)8124 (multi-node)70
MiMo-V2.6-Pro-RL1020B / 42B24 (multi-node)7132 (multi-node)66
Kimi-K2.61000B / 32B24 (multi-node)8132 (multi-node)77
Kimi-K2.7-Code1000B / 32B24 (multi-node)8132 (multi-node)77
DeepSeek-V4-Pro-08131600B / 49B32 (multi-node)8048 (multi-node)70
Qwen3.8-2.4T-A95B2446B / 95B40 (multi-node)50--
Kimi-K32800B / 104B48 (multi-node)50--

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Questions

What is the largest model that fits on one NVIDIA A100 40GB PCIe?

Of the models we track, Qwen3.6-35B-A3B (36B total, 3B active) fits on a single 40 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 NVIDIA A100 40GB PCIe for LLM inference?

Generation speed is mostly set by memory bandwidth: 1555 GB/s here. Each token reads the active weights once, so a model with 8 GB of active weights tops out near 194 tokens per second per stream before efficiency losses; batching many users raises total throughput.

Is NVIDIA A100 40GB PCIe a good choice for on-prem AI?

Previous-generation workhorse, now mostly sold used or refurbished; no FP8. NVIDIA lists 312 TFLOPS BF16 dense (624 with sparsity). Price is an indicative 2026 street range for one unit, not a quote.