HTC Vive's Refresh Rate

[ThaSherm]

Hi all. I have a question about the HTC Vive. I am reading that the system uses one HDMI 1.3, which supports 1920x1080 @ 60Hz. Seeing how each eye is seeing a 1920x1080 screen, how does one HDMI 1.3 support the minimum 90 Hz Refresh rate required per eye?

 

[Sakkura]

The HTC Vive actually uses HDMI 1.4. But it doesn't matter anyway, since HDMI 1.3 is enough. The resolution is not 1920x1080 per eye, it's 1080x1200 per eye, for a total of 2160x1200. HDMI 1.3 and 1.4 have a usable bandwidth of just over 8 Gbps. 2160x1200 at 90Hz is only 7 Gbps even with 10 bits per color.