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The X27q is generally a responsive monitor to use, the OSD is quite fast. So I'm not surprised the input latency is low, at just 0.4ms of processing delay. The major limiting factor is not so much the processing lag, but more the moderate refresh rate. 165Hz is a great starting point for PC gamers today, but if you want the best latency for competitive gaming, jumping up to 240Hz is the way to go, though you'll have to spend roughly twice as much if you want to stay at a 1440p resolution.
FreeSync is more common among budget gaming monitors, as it costs nothing to implement – there’s a hefty premium on Nvidia’s G-Sync. While there is a list of monitors that support G-Sync, nowadays both technologies are supported by graphics cards from both AMD and Nvidia. The maximum number of colors, which the display is able to reproduce, depends on the type of the panel in use and color enhancing technologies like FRC.The most widely used panels are those with 6, 8, and 10 bits for each of the RGB components of the pixel. They provide 18-, 24-, and 30-bit color, respectively. If your monitor refreshes at 60Hz, and your gaming PC is pumping out 120 frames per second, you’re losing a total of 60 frames every second because your monitor cannot refresh fast enough. This deficit might cause “screen tearing”, which looks like it sounds: horizontal lines that run across your screen and distort what you’re seeing. Or at least, mostly great. As I’ve already indicated, the X27qc suffers from a small accuracy problem. Across the board, this monitor struggles to accurately reproduce blue tones, dragging what might otherwise have been an acceptable set of colour accuracy results into perceptible levels of inaccuracy.
Once we’ve completed our quantitative tests, we use the monitor for at least a week, spending time in our favourite test games (it’s hard work) to qualitatively assess performance. We’ll stress-test the panels to judge build quality and note the number of ports, the limits of the viewing angles and the versatility of the stand. However. there is no inverse ghosting present, as there is no overshoot, typical of settings where overdrive is not used. Cumulative deviation is only modest, suggesting the balance between response times and overshoot is unbalanced in favor of minimizing overshoot.
Power consumption is low, this is a non issue for the display as it appears to use an efficient panel that holds up well compared to other models. Power prices are rising, but 23W of usage at 200 nits is very acceptable by today's standards.
The operating humidity shows the acceptable level of humidity, in which the display will function flawlessly. It sets a lower and an upper humidity level for safe operation and is measured in percentage. On the subject of colours: the X27qc isn’t the most accurate monitor in the world, which I’ll discuss later on, but it certainly scored well for colour gamut coverage. In its default “gaming” mode – and in fact in most other colour presets – the X27qc produced 116% of the sRGB colour space, 82.7% of the DCI-P3 colour space and 80.4% of the Adobe RGB colour space. These are decent figures for a cheap gaming monitor with no HDR aspirations. In real terms, they simply mean that the X27qc doesn’t produce quite such a vibrant image when compared to panels with 90% or higher DCI-P3/Adobe RGB coverage.
Approximate height of the display. If the manufacturer does not provide such information, the height is calculated from the diagonal and the aspect ratio. HP doesn't include an sRGB mode with this display, and there are only a few other color controls, so overall the only major adjustment you can make is to the white balance. This can improve grayscale performance, but we end up shy of accurate results. For response time performance, HP includes four overdrive settings with the X27q, the first of which is Level 1. This is your classic overdrive disabled setting. Response times are weak, at just 11.5ms when running the monitor at 165Hz, which causes a bit of a blur trail to appear behind moving objects.
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