You'll need to create a custom resolution in your GPU's control panel (NVIDIA Control Panel > Change resolution > Customize). No driver required.
Stop searching for "seiki 870t driver download." You already have it. seiki 870t driver download
If you landed here looking for the official Seiki 870T driver, you've hit a dead end. Seiki exited the North American TV/monitor market years ago, and their driver support page is gone. You'll need to create a custom resolution in
Seiki 870T Driver Download – Why You Can't Find It (And What to Do Instead) If you landed here looking for the official
Still stuck? Check your HDMI cable – that's the real culprit for 120Hz mode. #Seiki870T #TechHelp
The Seiki 870T uses a standard MStar controller chip. Windows, macOS, and Linux all recognize it as a generic PnP monitor. You do not need a proprietary driver for basic 4K/60Hz (or 1080p/120Hz) operation.