Do you have a 3D TV on which you don’t see (almost never) 3D movies? Here’s how to make best use of your TV’s 3D function: use it as a computer monitor that runs at (at least) 75 frames per second.
Refresh rate to 120, or even 144 frames per second is the new sensation when talking about monitors lately, but the price of this new technology can make you think. But if you have a 3D TV active, then you already have a monitor capable of displaying images at more than 60 frames per second.
How does this work
To create the illusion of three-dimensionality, active 3D TVs must display two images for each frame, one for each eye. This means effectively doubling the number of frames displayed at the same time. But although officially these do not support it, 3D TVs can use this skill in 2D mode. This means that an active 3D TV can be a monitor, capable of displaying images in a sequence faster than the standard 60 frames per second of conventional monitors and TV sets.
So, are there all active 3D TVs monitors capable of 120 frames per second? In some cases yes. Most of these TVs no. While some 3D TVs from Sony would be capable of producing a Full HD image at 120 frames per second, most manufacturers of 3D TVs do not go there. That may have something to do with film running at 24 frames per second, and when doubling frames necessary to obtain the 3D effect, these TVs do not require a refresh rate of 120 hertz. I tested it with my 3D TV from Samsung and managed to increase the refresh rate to 75 frames per second. Maybe additional 15 frames don’t mean much but hey, it is a totally free upgrade!
Have you ever connected your laptop or PC to the TV? If so, then use the TV as a monitor. And a monitor with a higher refresh rate, is a better monitor. Increasing the refresh rate produces a smoother picture with less stuttering.
Is there a risk to wreck my TV?
Increasing your refresh rate with active 3D TV is not an overclock of the screen, so it is a perfectly safe procedure. All you do is push a functioning mode, to which the device menu gives you no access. The video card driver can be tricked to send a signal to the TV and a refresh rate that it does not report to the computer. That does not mean forcing the TV but that producers of 3D TVs simply do not provide access to the video driver from the computer to this function. Please note that this hack works only with active 3D TVs.
How to do this?
You need a free program called Custom Resolution Utility that you can download from here.
Custom Resolution Utility lets you inject any non-standard resolution in the video driver. In our case we add 1920 × 1080 to 75 frames per second. If you believe that your TV can do more, you are free to experiment increasing the refresh rate to 80, 90, etc.
Do not worry, if you put a value that the TV can’t display, the video driver will automatically reset. In our tests with a Samsung TV, regardless of resolution, maximum refresh rate was 75.
Once you have entered non-standard resolution, restart the computer and it is ready! If you right click on the screen and select Screen Resolution-> Advanced Settings-> Display, you can see that the Screen refresh rate of 75 hertz.
Your 3D TV suddenly became the fastest computer monitor that you possess. As always you can keep track of our other tv reviews here.