Connectivity

The KTC OLED G27P6 is equipped with a pair of HDMI 2.0 inputs, a DisplayPort 1.4 input, and a USB-C DP Alt Mode input. The latter supports 65 W Power Delivery, so that's the amount of power it can deliver to a connected device, such as a laptop. HDMI 2.0 ports don't have the necessary bandwidth to provide a full 240 Hz refresh rate at native 2560x1440 screen resolution, so if you opt to use the HDMI interface, do keep in mind you'll be limited to 144 Hz refresh rate at 1440p. A HDMI 2.1 interface would be more appropriate, but this is likely one of the ways KTC kept the price of the OLED G27P6 lower than competition.


Next to the video inputs you'll find a USB 3.0 Type-B upstream port and two USB 3.0 Type-A ports. The KTC OLED G27P6 has an integrated KVM switch, which lets you take control of two different devices with a single set of peripherals connected to the monitor. To make this work, you need to connect one device via the USB Type-C DP Alt Mode port, and another one via the USB Type-B upstream port (for USB connectivity) and either a HDMI or DisplayPort (for video).


The integrated KVM switch is off by default and has to be activated within the OSD (Input > KVM). The most practical setting for it is Auto, as that one automatically switches the peripherals to the selected video input. However, you also have to deactivate automatic input source switching. Otherwise, you won't be able to switch to the device connected via USB-C DP Alt Mode input. You'll select the Type-C input in the OSD and the monitor will look for the source signal, but will fall back to the previously used input (DisplayPort or HDMI) in a couple of seconds. The issue appears because it takes longer for the monitor to detect the input signal it's receiving via USB-C than it searches for it. After you deactivate the automatic input switching (Input > Auto > Off), the monitor will stay on the USB-C input until you tell it otherwise, and will detect a signal after some 10 seconds. The issue was present regardless of the source I was connecting via USB-C (iPad Air, Samsung Galaxy S22 Plus, Razer Blade 14), but at least there's a way to work around it. It's potentially fixable through a firmware update, too, although I have no information that one is coming, nor am I familiar with KTC's firmware development practices.

In a practical sense, I don't see any downsides to deactivating the automatic input switching, as KVM users have to switch between DisplayPort/HDMI and USB-C manually anyway. The whole process is simplified by putting the input selection in a quick menu, but more on that in the OSD section of this review.


The monitor is also equipped with a 3.5-millimeter audio output.

Power Consumption

The KTC OLED G27P6 gets its power from an external 168 W (24 V/7 A) power brick. I've used the Meross MSS315 Matter Smart Wi-Fi Plug and the accompanying mobile app to determine the monitor's power consumption at various brightness levels, as well as in Power Saving mode, which it enters as soon as the PC goes to sleep. My power consumption measurements are summed up in the chart below. They were made after resetting the monitor to factory defaults.



The measured power consumption of the KTC OLED G27P6 is a complicated matter. Unlike many other OLED monitors, it doesn't offer a way to turn off the ABL (Auto Brightness Limiter), so the brightness of the panel changes depending on the content currently being displayed – as does the power consumption. To keep things consistent between my other OLED monitor reviews, I measure the power consumption with the monitor showing a Windows desktop with the default light Windows 11 wallpaper and theme applied. Do take that into consideration when examining the numbers in the chart above.

Having said that, the power consumption of the KTC OLED G27P6 is completely in line with other 27-inch 240 Hz OLED gaming monitors. It will of course increase if you have a secondary source connected to the USB-C input because the monitor will use additional power to charge its battery. As already mentioned, the KTC OLED G27P6 supports USB-C Power Delivery with up to 65 W of power.