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LG G1 vs. Sony A90J: Which is the Better OLED Gaming TV?

The G1 and A90J are two of the most popular OLEDs released in 2021. So, how do these television sets fare against each other when it comes to playing videogames on the PC, PlayStation 5, Xbox Series S, Xbox Series S and other consoles?

You can find out in this comparison guide between the LG and Sony OLED TVs.

Quick Summary

When compared to the Sony A90J, the LG G1 features lower input lag. The G1 is also the only one of the two to currently support FreeSync, GSYNC and Variable Refresh Rate.

With that said, the A90J should be adding support for Variable Refresh Rate in the future.

While both of these OLEDs come with HDMI 2.1 ports, the LG G1 has four of them while the Sony A90J has two.

On the other hand, the A90J has a slightly brighter HDR display than the A90J.

Overall, we recommend getting the LG G1 over the A90J. Although it has a slightly dimmer screen, the G1 makes up for it with having lower input lag in addition to supporting FreeSync, GSYNC and Variable Refresh Rate right out of the box.

If you are interested, you can purchase either of the aforementioned television sets on Amazon with the following links:

You can also see how the LG G1 compares to the LG CX with this guide.

G1 vs. A90J Comparison Chart

You can take a look at Seeking Tech’s comparison table for the G1 and A90J below.

 LG G1Sony A90J
Screen Sizes55" (OLED55G1PUA)

65" (OLED65G1PUA)

77" (OLED77G1PUA)
55" (XR-55A90J)

65" (XR-65A90J)

83" (XR-83A90J)
HDMI PortsHDMI Port #1: HDMI 2.1

HDMI Port #2: HDMI 2.1

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 inputAntenna/cable input

Composite input via adapter (sold separately)
HDR FeaturesDolby Vision

HDR10

HLG

Wide Color Gamut
Dolby Vision

HDR10

HLG

Wide Color Gamut
HDR Real Scene Highlight601 nits609 nits
HDR Peak 2% Window835 nits803 nits
HDR Peak 10% Window811 nits770 nits
HDR Peak 25% Window420 nits512 nits
HDR Peak 50% Window289 nits294 nits
HDR Peak 100% Window168 nits194 nits
HDR Sustained 2% Window652 nits763 nits
HDR Sustained 10% Window765 nits723 nits
HDR Sustained 25% Window396 nits499 nits
HDR Sustained 50% Window274 nits293 nits
HDR Sustained 100% Window162 nits192 nits
HDR ABL0.0930.086
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)10.3 ms17.5 ms
Input Lag at 1080p resolution and 120 Hz refresh rate (Game Mode Enabled)5.7 ms12.1 ms
Input Lag at 1080p resolution and Variable Refresh Rate5.3 msN/A
Input Lag at 1440p resolution and 60 Hz refresh rate (Game Mode Enabled)10.3 ms16.6 ms
Input Lag at 1440p resolution and 120 Hz refresh rate (Game Mode Enabled)6.0 msN/A
Input Lag at 1440p resolution and Variable Refresh Rate5.5 msN/A
Input Lag at 4K resolution and 60 Hz refresh rate (Game Mode Enabled)10.2 ms16.6 ms
Input Lag at 4K resolution and 60 Hz refresh rate + 10-bit HDR (Game Mode Enabled)10.3 ms16.6 ms
Input Lag at 4K resolution and 60 Hz at 4:4:410.2 ms16.7 ms
Input Lag at 4K resolution and 120 Hz refresh rate (Game Mode Enabled)5.5 ms12.0 ms
Input Lag at 4K resolution and Variable Refresh Rate5.4 msN/A
Input Lag at 1080p resolution and 60 Hz refresh rate (Game Mode Disabled)48.4 ms168.6 ms
Input Lag at 4K resolution and 60 Hz refresh rate (Game Mode Disabled)48.8 ms151.9 ms
Input Lag at 4K resolution and 60 Hz refresh rate With Interpolation99.1 ms143.7 ms
PricingCheck price on Amazon.Check price on Amazon.

Screen Sizes

You can check out the available screen sizes, along with the associated model numbers, for both OLEDs below:

G1:

  • 55″ (OLED55G1PUA)
  • 65″ (OLED65G1PUA)
  • 77″ (OLED77G1PUA)

A90J:

  • 55″ (XR-55A90J)
  • 65″ (XR-65A90J)
  • 83″ (XR-83A90J)

HDMI Ports

When it comes to HDMI ports, the G1 includes four HDMI 2.1 ports while the A90J comes with two HDMI 2.0 ports and two HDMI 2.1 ports.

You can check out a breakdown of the HDMI versions for both TVs below:

G1:

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

A90J:

  • 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

Both the G1 and A90J come with an antenna/cable input, which will allow you to directly connect retro systems such as the Nintendo Entertainment System, Super Nintendo Entertainment System and Sega Genesis.

The A90J also supports composite input, although you need to purchase an AV adapter in order to directly connect consoles like the PS1, PS2, Nintendo 64, GameCube, Nintendo Wii, Sega Saturn, Dreamcast and Xbox.

HDR Features

These two OLEDs can output the Dolby Vision HDR format, which is currently supported by the Xbox Series S and Xbox Series X.

The G1 and A90J can also output the HDR10 format, which is supported by the aforementioned Xbox Series S and Xbox Series X in addition to the PlayStation 4, PlayStation 4 Pro, PlayStation 5, Xbox One S and Xbox One X.

You can find the full list of supported HDR features for these LG and Sony televisions below:

  • Dolby Vision
  • HDR10
  • HLG
  • Wide Color Gamut

Game Mode HDR Brightness

When you are using the game mode for both of these OLED televisions, the A90J provides a slightly brighter HDR image when compared to the G1.

According to tests done by RTINGS, the A90J can output at 609 nits when you are playing a game, which is 8 nits more than the G1.

For a passable HDR experience, we recommend getting a TV capable of outputting 500 nits at the absolute minimum. Therefore, we consider that both of these OLEDs to be good HDR sets.

You can find RTINGS’ HDR test results for the G1 and A90J below:

HDR Real Scene Highlight

  • G1: 601 nits
  • A90J: 609 nits

HDR Peak 2% Window

  • G1: 835 nits
  • A90J: 803 nits

HDR Peak 10% Window

  • G1: 811 nits
  • A90J: 770 nits

HDR Peak 25% Window

  • G1: 420 nits
  • A90J: 512 nits

HDR Peak 50% Window

  • G1: 289 nits
  • A90J: 294 nits

HDR Peak 100% Window

  • G1: 168 nits
  • A90J: 194 nits

HDR Sustained 2% Window

  • G1: 652 nits
  • A90J: 763 nits

HDR Sustained 10% Window

  • G1: 765 nits
  • A90J: 723 nits

HDR Sustained 25% Window

  • G1: 396 nits
  • A90J: 499 nits

HDR Sustained 50% Window

  • G1: 274 nits
  • A90J: 293 nits

HDR Sustained 100% Window

  • G1: 162 nits
  • A90J: 192 nits

HDR ABL

  • G1: 0.093
  • A90J: 0.086

Native Refresh Rate

The LG G1 and Sony A90J both have a native refresh rate of 120 Hz.

On the PlayStation 5, this means that you can play games at 120 frames per second in the 1080p and 4K resolutions when using the HDMI 2.1 port.

On the Xbox Series X, you are able to play games at 120 fps in the 1080p, 1440p and 4K resolutions over HDMI 2.1 on the G1 as well as 120 fps in 1080p and 4K resolutions on the A90J.

With the Xbox Series S, you can play games at 120 frames per second at 1080p and 1440p on the G1 as well as 1080p on the A90J. To play games at 120 fps in 4K with the Series S on both of these TVs, you need a HDMI 2.1 cable as this console only comes with a HDMI 2.0 cable.

Adaptive Sync Support

The G1 is the only one of these OLEDs to support FreeSync (for PCs with AMD graphics cards), GSYNC (for PCs with NVIDIA graphics cards) and Variable Refresh Rate (currently available for the Xbox Series S and Xbox Series X with the PS5 expected to add the same feature in the future).

With that said, the Sony has previously announced that they will be adding Variable Refresh Rate compatibility via a future firmware update to the A90J.

Input Lag

According to tests done by RTINGS, the G1 does feature lower input lag than the A90J when you compare the same resolution and refresh rate combinations.

Even so, we still consider the A90J to be a pretty responsive television set. It just that the G1 is even better at input lag reduction.

You can take a look at RTINGS’ input lag test results for the G1 and A90J below:

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

  • G1: 10.3 ms
  • A90J: 17.5 ms

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

  • G1: 5.7 ms
  • A90J: 12.1 ms

1080p resolution with Variable Refresh Rate

  • G1: 5.3 ms
  • A90J: N/A

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

  • G1: 10.3 ms
  • A90J: 16.6 ms

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

  • G1: 6.0 ms
  • A90J: N/A

1440p resolution with Variable Refresh Rate

  • G1: 5.5 ms
  • A90J: N/A

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

  • G1: 10.2 ms
  • A90J: 16.6 ms

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

  • G1: 10.3 ms
  • A90J: 16.6 ms

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

  • G1: 10.2 ms
  • A90J: 16.7 ms

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

  • G1: 5.5 ms
  • A90J: 12.0 ms

4K resolution with Variable Refresh Rate

  • G1: 5.4 ms
  • A90J: N/A

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

  • G1: 48.4 ms
  • A90J: 168.6 ms

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

  • G1: 48.8 ms
  • A90J: 151.9 ms

4K resolution and 60 Hz refresh rate With Interpolation

  • G1: 99.1 ms
  • A90J: 143.7 ms