Cause: Generic driver not reporting correct EDID over HDMI (HDMI 2.0 tops at 144Hz on 1440p). DisplayPort is required for 240Hz.
Fix: Install the official Samsung driver and force it per Part 2. Then, in NVIDIA Control Panel → Change resolution → Under “PC” section, select 1920x1080 (for 25″) or 2560x1440 (for 27″) and choose 240Hz.
When users search for “Samsung Odyssey G40B drivers,” they typically expect an executable file that enhances performance. The G40B does not use Windows classic .INF drivers for graphics processing. samsung odyssey g40b drivers upd
Samsung has released multiple updates for the G40B (240Hz IPS panel) addressing:
If the file is an .exe, just run it and follow the prompts. If it is a .zip file, follow these steps: Cause: Generic driver not reporting correct EDID over
Verification:
Go directly to Samsung’s official support page (avoid third-party driver sites).
Search for: “Samsung Odyssey G40B”
→ Select your exact model (e.g., LS27BG40EEXXY — the suffix varies by region).
→ Click “Downloads” → Look for: If you see nothing under “Drivers” or “Firmware”
If you see nothing under “Drivers” or “Firmware” — that’s normal. Samsung doesn’t always release updates unless necessary.