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TTS Bench — Speed — 2026-06-02_1224

Rig: windows-5090 — AMD Ryzen 9 9950X3D 16-Core Processor (16C) · NVIDIA GeForce RTX 5090 32GB · 126 GB RAM · Windows 11

Label: default voice · openvoice

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 predefined-voice: no data

Fastest cloning-capable: OpenVoice v2 (cuda) — 16.93× warm RTFx, 361ms warm TTFA

Model	Device	TTFA cold	TTFA warm	RTFx cold	RTFx warm	Peak RAM	Peak VRAM	Size	Released
OpenVoice v2	cuda	1.85s	361ms	3.65×	16.93×	2.65 GB	1.35 GB	~100M	Apr 2024
OpenVoice v2	cpu	2.83s	1.48s	2.10×	4.10×	2.78 GB	—	~100M	Apr 2024