The industry advances and as such, companies do the same to keep up to date. Those competing in the monitor market until not too long ago have been using a parameter to compare the speed of their monitors, specifically GTG . But what does this parameter express and measure? And above all, why is it currently in disuse by the vast majority of manufacturers on the market?
An industry as cannibalistic as that of gaming monitors is always looking for a way to measure and represent the speed of its monitors. Marketing sells and they know it well, so depending on the type of gaming monitor many manufacturers are disregarding the GTG parameter, holy grail of what we could expect from a monitor without having the specific data of a review.
GTG, what is it and how does it help us understand the speed of a panel?
GTG (also known as G2G) is the acronym for Gray To Gray and its value is stipulated in milliseconds, since it is the time it takes for a pixel to change between two different colors. This parameter has nothing to do with the already seen MPRT , although as we already commented in its corresponding article, both are linked.
This kind of symbiosis is understood from the moment when GTG has finished its function, that is, when the pixel has changed color, but for some reason said pixel continues to be visible or static until the monitor refreshes said panel again.
One of the key questions is why the parameter name itself. And it refers to the gray color and not to any of the current RGB, why is this happening?
Basically because no current LCD or LED display shows RGB sub-pixels, but these are monochromatic, so manufacturers have to use what are known as color filters.
A high GTC can allow unwanted effects in our games
As we can expect, a very slow change of color between the pixels will have a negative impact on each monitor, among them the much feared Ghosting or Blurring . Therefore, when looking at a gaming monitor, it is recommended that your GTG be at least half the screen refresh time.
For example, if our screen refreshes at 60 Hz, the panel will take 1 second between 60 frames to refresh (1/60), only 16.7 ms in each update. Therefore, in this case, manufacturers try to offer GTG rates less than or equal to 8 ms.
The problem is that although this is ideal for the panel, the human eye is able to appreciate these differences and therefore the smaller the GTG the better overall quality feel it will have. In general, it is stated that the GTG should be a very small fraction of each update cycle to avoid all the described effects.
The ideal for any gaming monitor on the market are GTG figures less than 4 ms , since the most trained eyes can see according to which monitors values above only 1 ms.
Therefore, the ideal is to opt for gaming monitors with high hertz rates in their panel, mainly because we ensure a shorter pixel visibility time because the manufacturer has to introduce lower rates of GTG every time if it wants to keep its panel outside the much-feared motion blur.
