Originally Posted by Scorpion667
I tend to favor prad.de's reviews as they involve testing via oscilloscope at 15 points on the screen.
The IPS panel which you are referring to has an image construction time of 16.5ms where as my XL2420T does it in 3.1ms. The input lag on that IPS panel is very impressive however.U2312HMXL2420T
According to PRAD.
The lag is measured as the total of the signal delay time and half of the average frame change time. We measured the signal lag, which is important for gamers, at am extremely short 1.1 milliseconds on the U2312MH. When half of the average frame change time of 8.2 milliseconds is added, the average overall lag amounts to 9.3 milliseconds, which is still very short for an IPS panel.
We measure the lag as the sum of the signal delay time and half of the average frame change time. When the monitor is in use at 60 Hz, we measure an unnoticeable (but not particularly short) signal delay of 6.4 milliseconds on the XL2420T. On average, only another 1.5 milliseconds pass until the target luminance is achieved, so the average total lag is rather short at 7.9 milliseconds.
In 120Hz usage, the lag time adjusts to the faster frame change and drops to just 3.4 milliseconds. The average image construction time remains the same and thus, the average total lag in this case is a very short 4.9 milliseconds.econds.
Up to you how you interpret it. It's 2013, I'm not paying a premium price for a TN panel. The Benq may have a slight advantage in 120hz mode, but in 60hz mode? It's just another TN panel.
The latency is determined as sum of the signal delay time and half of the average frame. Key for gamers, we measure extremely short 0.9 milliseconds for the signal delay. Another 6.5 milliseconds later, the target brightness is reached. Being at 7.4 milliseconds, the mean total latency is very short.
According to PRAD, the u2412M is even quicker than the Benq at 60HZ.Edited by Kand - 5/30/13 at 8:04pm