Test System Setup
In the video below, we walk you through the various OSD menus.
The OSD makes use of three physical buttons (not including the power button) and a five-way joystick. The joystick makes navigation of the OSD a breeze, and the physical buttons are only used to exit, access the on-screen Crosshair and Timer function, and change the refresh rate.
Power consumption is measured at the wall with a blank Word document open and the monitor on as bright as it can go.
The ASUS Swift PG278Q consumes a massive amount of power sitting with the blank document open at full brightness and 144Hz refresh rate. We measured a consumption of 56 watts at the wall.
We use a LX1010B light meter to measure brightness in Lux. The monitor is placed in the center of the screen on a blank Word document with the monitor at full brightness.
With the high power consumption, we did get a pretty decent max brightness. The PG278Q came in second place with a measured brightness of 480 lux. I doubt this will be enough to offset the massive power consumption.
We use this as a way to measure a monitor's efficiency. It is simply the monitor's brightness divided by its power draw.
As I feared, the PG278Q bombs the efficiency conversion, producing just 8.6 lux-per-watt. It's the first monitor we've seen in the single digits, so we're going to have to assume G-Sync is energy hungry, since we have other 144Hz monitors on there that did quite a bit better.
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