- SWITCHRESX 4K SCALED TO 1080P 720P
- SWITCHRESX 4K SCALED TO 1080P FULL
- SWITCHRESX 4K SCALED TO 1080P SERIES
- SWITCHRESX 4K SCALED TO 1080P TV
We conduct this test using Blur Busters' 120fps test.
SWITCHRESX 4K SCALED TO 1080P TV
The next test is to see whether the TV can display 120 frames per second. In this example, the text looks much clearer on the Samsung KS9000. You can see an example of what to look for in the picture on the right. To test the TV's ability to display chroma 4:4:4, we use the left image shown below, and it has to be displayed at 100% pixel perfect size, with no desktop scaling. If a particular resolution isn't on the list, we create a custom one. We test all of the above resolutions to see if there are any oddities.
![switchresx 4k scaled to 1080p switchresx 4k scaled to 1080p](https://i.stack.imgur.com/yJchb.png)
On the computer side, we check that there aren't any custom resolutions that were previously created, then we look at the list of supported resolutions in the NVIDIA Control Panel for the following resolutions: For LG, it's called Ultra HD Deep Color, Samsung calls it Input Signal Plus, and Sony calls it HDMI Enhanced Format. This setting has a different name depending on the brand and/or firmware.
SWITCHRESX 4K SCALED TO 1080P FULL
We begin the test by connecting the PC to the TV using an HDMI cable, then we enable the setting that allows for a full bandwidth signal on the TV. The NVIDIA GTX 1050 can't send an 8k signal 8k TVs will be tested with an NVIDIA RTX 3080 since it has an HDMI 2.1 port. We also use a Panasonic DMC-FZ200 camera for the 120Hz refresh rate test. To perform our tests, we use an Alienware 13 R3 laptop equipped with an NVIDIA GeForce GTX 1050, as it doesn't have 1440p on its list of default resolutions, and the graphics processor doesn't perform any upscaling that could skew results. Note that if the timing is set to 'Automatic', it can sometimes show that the active resolution is 3840 x 2160, even though the signal sent is 1440p. Finally, we check to see which resolution is active. If unsuccessful, we then try 'CVT' and 'Automatic'. We do this by creating a custom resolution in the NVIDIA Control Panel, then we change the Timing to 'CVT reduced blank' to reduce bandwidth. When a given resolution doesn't work natively, we try using a forced resolution.
SWITCHRESX 4K SCALED TO 1080P SERIES
Also, our testing methodology is likely to change due to the arrival of NVIDIA's RTX 30- series graphics cards, the Sony PlayStation 5, the Microsoft Xbox Series X, and new Radeon graphics cards, all of which have an HDMI 2.1 port. That said, 4k 120Hz isn't officially supported on HDMI 2.0, and it doesn't always work, so it largely depends on each TV's implementation. However, since we're only testing the TV's ability to display an image at 4k 120Hz, we can save bandwidth by forcing 8-bit color coding and chroma 4:2:0, allowing a 120Hz signal to pass. Typically, when talking about a 4k 120Hz signal, it's generally assumed that it includes 10-bit HDR and chroma 4:4:4, which exceeds the 18Gbps bandwidth of HDMI 2.0b. We're often asked how we test for 4k 120Hz without a proper HDMI 2.1 source.
![switchresx 4k scaled to 1080p switchresx 4k scaled to 1080p](http://i.rtings.com/images/resolution-4k-ultra-hd-size.png)
This isn't an issue for most people, as these are standard resolutions that have evolved over the years and most modern TVs can display them properly.
SWITCHRESX 4K SCALED TO 1080P 720P
Although 4k TVs are becoming the norm, most content, such as from broadcast TV or cable TV, is still delivered in 720p and 1080p, or in some cases, 480p.