Hi,

• “Quiet Mode” – Bios position one. Switch is in position closest to where you plug in your displays. This mode is designed to optimally suit a gamer that wants to keep a tight lid on acoustics. If you do not play with headphones, you do not have a high end gaming chassis, or your room’s ambient noise level is extremely low this may be the mode for you.
• “Uber Mode” – Bios position two. Switch is in position furthest away to where you plug in your displays

The Uber mode will increase the performance but not a huge difference. It will increase the fan speed.
Please switch when the PC is switched off or the mode will not be running.