Default "Rest mode" power draw: 10W
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If you don't want to eliminate all the benefits of Rest Mode, you can still save some power by turning off specific bits of functionality in the "Power Save" settings menu. Here's a rough estimate of what each function contributes to that 10W power draw (certain combinations will be lower than simply adding Wattages would predict):
- "Supply Power to USB Ports": 6.3W
- "Stay Connected to the Internet"/"Enable Turning On of PS4 from Network": 2.4W
- "Keep Application Suspended": 1.2W
Surprisingly, the power draw for keeping the USB ports on applies
even when nothing is plugged in to those USB ports. Plugging in an uncharged DualShock 4 controller draws an additional 5 Watts on top of that. If you still want to recharge your controller after a session without wasting long-term energy on the USB ports, you can choose to disable the USB ports after three hours in the settings menu.