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U8G vs. X90J: Which is the Better Gaming TV?

The U8G and X90J are both 4K Ultra HD TV sets that launched in 2021. So, which of these is better at showing off games running on the PC, PS5, Xbox Series X, Xbox Series S, Nintendo Switch and other systems?

You can find out in this comparison between these new Hisense and Sony TV sets.

Quick Summary

The Hisense U8G is a better gaming television than the Sony X90J as it features a better local dimming contrast, slightly better HDR output in addition to slightly lower input lag.

The U8G is also the only TV in this comparison to feature a wide color gamut in addition to supporting FreeSync, GYSNC and Variable Refresh rate right out of the box.

You can also see how the U8G stacks up against the U6G, U7G and U9DG with this comparison.

U8G vs. X90J Comparison Chart

You can check out Seeking Tech’s comparison table for the U8G and X90J below.

 Hisense U8GSony X90J
Screen Sizes55" (55U8G)

65" (65U8G)
50" (XR50X90J)

55" (XR55X90J)

65" (XR65X90J)

75" (XR75X90J)
HDMI PortsHDMI Port #1: HDMI 2.0

HDMI Port #2: HDMI 2.0

HDMI Port #3: HDMI 2.1

HDMI Port #4: HDMI 2.1
HDMI Port #1: HDMI 2.0

HDMI Port #2: HDMI 2.0

HDMI Port #3: HDMI 2.1

HDMI Port #4: HDMI 2.1
Legacy Consoles SupportAntenna/cable input

Composite input via adapter (included)
Antenna/cable input

Composite input via adapter (not included)
HDR FeaturesDolby Vision

HDR10

HDR10+

HLG

Local Dimming

Wide Color Gamut
Dolby Vision

HDR10

HLG

Local Dimming
Native Contrast Ratio5,279 to 15,600 to 1
Local Dimming Contrast Ratio7,923 to 16,221 to 1
HDR Real Scene Highlight774 nits775 nits
HDR Peak 2% Window980 nits513 nits
HDR Peak 10% Window1,529 nits778 nits
HDR Peak 25% Window1,591 nits641 nits
HDR Peak 50% Window952 nits557 nits
HDR Peak 100% Window723 nits561 nits
HDR Sustained 2% Window969 nits502 nits
HDR Sustained 10% Window1,501 nits758 nits
HDR Sustained 25% Window1,564 nits639 nits
HDR Sustained 50% Window946 nits554 nits
HDR Sustained 100% Window719 nits560 nits
HDR ABL0.0420.022
Native Refresh Rate120 Hz120 Hz
Adaptive Sync SupportFreeSync

GSYNC

Variable Refresh Rate
Variable Refresh Rate via future firmware update
Input Lag at 1080p resolution and 60 Hz refresh rate (Game Mode Enabled)15.2 ms18.7 ms
Input Lag at 1080p resolution and 120 Hz refresh rate (Game Mode Enabled)5.9 ms10.0 ms
Input Lag at 1080p resolution and Variable Refresh Rate8.8 msN/A
Input Lag at 1440p resolution and 60 Hz refresh rate (Game Mode Enabled)15.1 ms18.1 ms
Input Lag at 1440p resolution and 120 Hz refresh rate (Game Mode Enabled)5.9 msN/A
Input Lag at 1440p resolution and Variable Refresh Rate8.9 msN/A
Input Lag at 4K resolution and 60 Hz refresh rate (Game Mode Enabled)15.2 ms18.0 ms
Input Lag at 4K resolution and 60 Hz refresh rate + 10-bit HDR (Game Mode Enabled)15.1 ms18.0 ms
Input Lag at 4K resolution and 60 Hz at 4:4:415.1 ms18.1 ms
Input Lag at 4K resolution and 120 Hz refresh rate (Game Mode Enabled)5.8 ms11.1 ms
Input Lag at 4K resolution and Variable Refresh Rate8.9 msN/A
Input Lag at 1080p resolution and 60 Hz refresh rate (Game Mode Disabled)124.0 ms161.7 ms
Input Lag at 4K resolution and 60 Hz refresh rate (Game Mode Disabled)122.1 ms144.9 ms
Input Lag at 4K resolution and 60 Hz refresh rate With Interpolation101.4 ms137.5 ms
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Screen Sizes

Unlike the U8G, the X90J offers the 50-inch and 75-inch screen size options. You can find the available sizes and model numbers for both products below:

U8G:

  • 55″ (55U8G)
  • 65″ (65U8G)

X90J:

  • 50″ (XR50X90J)
  • 55″ (XR55X90J)
  • 65″ (XR65X90J)
  • 75″ (XR75X90J)

HDMI Ports

Both of the Hisense and Sony televisions come with a pair of HDMI 2.1 ports to go along with two HDMI 2.0 ports.

You can find the HDMI versions of each port for both of these TVs below:

  • HDMI Port #1: HDMI 2.0
  • HDMI Port #2: HDMI 2.0
  • HDMI Port #3: HDMI 2.1
  • HDMI Port #4: HDMI 2.1

Legacy Consoles Support

The U8G and X90J should be compatible with systems (such as the NES, Super NES and Sega Genesis) that use the antenna/cable tuner.

While both also support composite input, only the U8G comes with an AV component adapter cable included. For the X90J, you will need to get your own adapter cable if you want to connect systems like the PS1, PS2, Nintendo 64, GameCube, Sega Saturn, Dreamcast and Xbox.

HDR Features

When it comes to HDR, the Xbox Series S and Xbox Series X support the Dolby Vision and HDR10 formats. The PC, PS4, PS4 Pro, PS5, Xbox One S and Xbox One X support HDR10.

Fortunately, both the U8G and X90J are capable of outputting Dolby Vision and HDR10.

When it comes to other HDR features, the U8G is the only one of these two sets to have a wide color gamut, which should lead to a more realistic color display when compared to the competition.

You can find the full lists of supported HDR features for the U8G and X90J below:

U8G:

  • Dolby Vision
  • HDR10
  • HDR10+
  • HLG
  • Local Dimming
  • Wide Color Gamut

X90J:

  • Dolby Vision
  • HDR10
  • HLG
  • Local Dimming

Contrast Ratios

According to tests conducted by RTINGS.com, the X90J has a higher native contrast than the U8G. However, the U8G has a better contrast when local dimming is enabled.

You can find RTINGS’ contrast ratio findings for the U8G and X90J below:

Native Contrast

  • U8G: 5,279 to 1
  • X90J: 5,600 to 1

Local Dimming Contrast

  • U8G: 7,923 to 1
  • X90J: 6,221 to 1

HDR Brightness in Game Mode

According to testing from RTINGS.com, the U8G and X90J are pretty much the same when it comes to HDR brightness output when you are playing a HDR game using the low latency game mode settings for both TVs. The U8G was able to output 774 nits while the X90J was able to output 775 nits.

However, the U8G does outperform the X90J in other specific scenarios. Therefore, we give the edge to the Hisense TV is this category.

You can find a comparison of RTINGS’ HDR brightness output test results for the U8G and X90J below:

HDR Real Scene Highlight

  • U8G: 774 nits
  • X90J: 775 nits

HDR Peak 2% Window

  • U8G: 980 nits
  • X90J: 513 nits

HDR Peak 10% Window

  • U8G: 1,529 nits
  • X90J: 778 nits

HDR Peak 25% Window

  • U8G: 1,591 nits
  • X90J: 641 nits

HDR Peak 50% Window

  • U8G: 952 nits
  • X90J: 557 nits

HDR Peak 100% Window

  • U8G: 723 nits
  • X90J: 561 nits

HDR Sustained 2% Window

  • U8G: 969 nits
  • X90J: 502 nits

HDR Sustained 10% Window

  • U8G: 1,501 nits
  • X90J: 758 nits

HDR Sustained 25% Window

  • U8G: 1,564 nits
  • X90J: 639 nits

HDR Sustained 50% Window

  • U8G: 946 nits
  • X90J: 554 nits

HDR Sustained 100% Window

  • U8G: 719 nits
  • X90J: 560 nits

HDR ABL

  • U8G: 0.042
  • X90J: 0.022

Native Refresh Rate

The U8G and X90J are both 120 Hz televisions. As a result, both should be able to output PC, PS5, Xbox Series S and Xbox Series X games at up to 120 frames per second in 1080p and 4K.

The U8G can also display 120 fps in 1440p for PC, Xbox Series S and Xbox Series X. The X90J is limited to displaying 60 Hz at the 1440p resolution.

Adaptive Sync Support

The Hisense U8G is the only television in this comparison to work with FreeSync, GSYNC and Variable Refresh Rate right out of the box. With that said, the Sony X90J is supposedly getting support for VRR through an upcoming firmware update.

All three of these adaptive sync modes will help fix any stuttering and screen tearing issues in games that run at an unstable frame rate.

On the PC, FreeSync is for AMD graphics cards while GSYNC is for NVIDIA graphics cards. VRR is supported by the Xbox Series S, Xbox Series X and, in the future, the PS5.

Input Lag

Based on tests from RTINGS.com, the Hisense U8G also has slightly lower input lag when compared to the Sony X90J. With that said, the X90J is still considered to be a pretty good when it comes to latency reduction.

You can take a look at RTINGS’ input delay findings for the U8G and X90J below:

1080p resolution and 60 Hz refresh rate (Game Mode Enabled)

  • U8G: 15.2 ms
  • X90J: 18.7 ms

1080p resolution and 120 Hz refresh rate (Game Mode Enabled)

  • U8G: 5.9 ms
  • X90J: 10.0 ms

1080p resolution and Variable Refresh Rate

  • U8G: 8.8 ms
  • X90J: N/A

1440p resolution and 60 Hz refresh rate (Game Mode Enabled)

  • U8G: 15.1 ms
  • X90J: 18.1 ms

1440p resolution and 120 Hz refresh rate (Game Mode Enabled)

  • U8G: 5.9 ms
  • X90J: N/A

1440p resolution and Variable Refresh Rate

  • U8G: 8.9 ms
  • X90J: N/A

4K resolution and 60 Hz refresh rate (Game Mode Enabled)

  • U8G: 15.2 ms
  • X90J: 18.0 ms

4K resolution and 60 Hz refresh rate + 10-bit HDR (Game Mode Enabled)

  • U8G: 15.1 ms
  • X90J: 18.0 ms

4K resolution and 60 Hz at 4:4:4

  • U8G: 15.1 ms
  • X90J: 18.1 ms

4K resolution and 120 Hz refresh rate (Game Mode Enabled)

  • U8G: 5.8 ms
  • X90J: 11.1 ms

4K resolution and Variable Refresh Rate

  • U8G: 8.9 ms
  • X90J: N/A

1080p resolution and 60 Hz refresh rate (Game Mode Disabled)

  • U8G: 124.0 ms
  • X90J: 161.7 ms

4K resolution and 60 Hz refresh rate (Game Mode Disabled)

  • U8G: 122.1 ms
  • X90J: 144.9 ms

4K resolution and 60 Hz refresh rate With Interpolation

  • U8G: 101.4 ms
  • X90J: 137.5 ms