To measure and calibrate monitors, we use an i1Pro spectrophotometer and version 5.1.2 of SpectraCal’s CalMAN software.

For patterns, we employ an AccuPel DVG-5000 video signal generator. This approach removes video cards and drivers from the signal chain, allowing the display to receive true reference patterns. Connections are made via HDMI.

The AccuPel DVG-5000 is capable of generating all types of video signals at any resolution and refresh rate up to 1920x1080 at 60 Hz. It can also display motion patterns to evaluate a monitor's video processing capabilities, with 3D patterns available in every format. This allows us to measure color and grayscale performance, crosstalk, and ghosting in 3D content via the 3D glasses.
The i1Pro is placed at the center of the screen (unless we’re measuring uniformity) and sealed against it to block out any ambient light. The Accupel pattern generator (bottom left) is controlled via USB by CalMAN, which is running on the Dell XPS laptop on the right.
Our version of CalMAN Ultimate allows me to design all of the screens and workflows to best suit the purpose at hand. To that end, we’ve created a display review workflow from scratch. This way, we can be sure and collect all the necessary data with a concise and efficient set of measurements.
The charts show us the RGB levels, gamma response, and Delta E error for every brightness point from zero to 100 percent. The table shows us the raw data for each measurement. And the area in the upper-left tells us luminance, average gamma, Delta E, and contrast ratio.

Every primary and secondary color is measured at 20, 40, 60, 80, and 100 percent saturation. The color saturation level is simply the distance from the white point on the CIE chart. You can see the targets moving out from white in a straight line. The further a point is from center, the greater the saturation until you hit 100 percent at the edge of the gamut triangle. This shows us the display’s response at a cross-section of color points. Many monitors score well when only the 100 percent saturations are measured. Hitting the targets at lower saturations is more difficult, and factors into our average Delta E value (which explains why our Delta E values are sometimes higher than those reported by other publications).
- Asus VG248QE At 144 Hz, For The Speed-Obsessed
- Packaging, Physical Layout, And Accessories
- OSD Setup And Calibration
- Measurement And Calibration Methodology: How We Test
- Results: Brightness And Contrast
- Results: Grayscale Tracking And Gamma Response
- Results: Color Gamut And Performance
- Results: Viewing Angle And Uniformity
- Results: Pixel Response And Input Lag
- Is Asus' VG248QE Fast Enough?


IPS is much better then TN
CaptainTom, 1ms makes a huge difference over 5ms. I didn't think it would at first until I bought one of these. Next to my old 24" HDTV that was my monitor for awhile, the difference is insane.
ICC profile is use is here: http://pcmonitors.info/reviews/asus-vg248qe
These high refresh rate monitors offer an incredible performance boost for first-person shooters if you have video cards that can produce frame rates close to the high refresh rates (or higher than 60Hz consistently). I've tried 1440p 60Hz monitors and can't stand the lower refresh. I've tried 60Hz surround setups and can't stand the low refresh. Once you go to these monitors, you develop a need for them. Nothing with lower refresh rates compares any longer. If you've never had it, you don't miss it and don't know what you're missing.
If you don't have the kind of GPU power to consistently get you beyond the 60fps mark at 1080p, 60Hz monitors are the way to go. I still wouldn't settle for cheap IPS monitors with crappy contrast ratios though. For shooters, the input lag is also a terrible characteristic of the cheap IPS monitor.
2 Titans for 1980x1080 resolution? That's a bit silly. You have spent $2000 for video cards and you are gaming on one 1980x1080 24 inch monitor!
You should have at least 3 of these monitors for a surround set-up.
Also - does anyone own one of these and notice that opening Pictures come up darker/dimmer than they look as thumbnails or in image preview??
ASUS... could you pretty please make us a 144 Hz 1440p IPS screen ??????
ASUS... could you pretty please make us a 144 Hz 1440p IPS screen ??????
I second the 'pretty please'.
I would prefer the best of both worlds, but I don't think current graphics cards are quite up to the task. (At least not for less than a $2500 machine) Current IPS panels out there can pull the hz, but can't match the response times just yet.
Add in the fact that the industry will be pushing for 4k soon, and you can kiss 120hz goodbye for a while.