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TTS Bench — Speed — 2026-06-01_1003
Rig: windows-5090 — AMD Ryzen 9 9950X3D 16-Core Processor (16C) · NVIDIA GeForce RTX 5090 32GB · 126 GB RAM · Windows 10
Label: cloning · chris_hemsworth_15s · neutts_air,neutts_nano — ref chris_hemsworth_15s.wav
TTFA = time to first audio (ms; lower is better). RTFx = realtime speed (× realtime; higher is better; e.g. 10× means 10 sec of audio generated per 1 sec of compute). Cold = first run after process start; warm = subsequent runs.
Speed winners
Fastest (this cloning run): NeuTTS Nano (cuda) — 2.00× warm RTFx, 331ms warm TTFA
Model Device TTFA cold TTFA warm RTFx cold RTFx warm Peak RAM Peak VRAM Size Released NeuTTS Nano cuda 854ms 331ms 1.60× 2.00× 2.59 GB 3.26 GB 229M Dec 2025 NeuTTS Nano cpu 863ms 387ms 1.23× 1.58× 5.12 GB — 229M Dec 2025 NeuTTS Air cuda 1.46s 492ms 0.88× 1.30× 2.96 GB 3.26 GB 748M Sep 2025 NeuTTS Air cpu 1.75s 568ms 0.75× 0.96× 5.47 GB — 748M Sep 2025