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C1 vs. QN90A: Which is the Better Gaming TV?

The LG C1 and Samsung QN90A were both released in 2021. So, which of these popular television sets is better for gaming on systems such as the PC, PlayStation 5, Xbox Series X, Xbox Series S and Nintendo Switch?

You can find out in this comparison guide between these 2021 TVs.

Quick Summary

When compared to the Samsung QN90A, the LG C1 has better contrast and three additional HDMI 2.1 ports. The C1 is also the only one in the comparison to support the Dolby Vision HDR format.

On the other hand, the QN90A is able to output at a much higher brightness level, making the Samsung TV more suitable for gaming in an overly bright room.

In terms of input lag, the two televisions are pretty much the same.

If you are interested, you can purchase either TVs on Amazon via the following links:

You can see how the QN90A compares to the LG G1 with this guide.

C1 vs. QN90A Comparison Chart

You can check out Seeking Tech’s comparison table for the C1 and QN90A below.

 LG C1Samsung QN90A
Screen Sizes48" (OLED48C1PUB)

55" (OLED55C1PUB)

65" (OLED65C1PUB)

77" (OLED77C1PUB)

83" (OLED83C1PUA)
50" (QN50QN90AAFXZA)

55" (QN55QN90AAFXZA)

65" (QN65QN90AAFXZA)

75" (QN75QN90AAFXZA)

85" (QN85QN90AAFXZA)
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 2.0

HDMI Port #4: HDMI 2.1
Legacy Consoles SupportAntenna/cable inputAntenna/cable input
HDR FeaturesDolby Vision

HDR10

HLG

Wide Color Gamut
HDR10

HDR10+

HLG

Wide Color Gamut

Local Dimming
Contrast RatioInfinite to 1Native: 3,510 to 1

Local Dimming: 26,534 to 1
HDR Real Scene Highlight611 nits1,862 nits
HDR Peak 2% Window737 nits709 nits
HDR Peak 10% Window743 nits1,614 nits
HDR Peak 25% Window403 nits1,655 nits
HDR Peak 50% Window285 nits1,110 nits
HDR Peak 100% Window162 nits757 nits
HDR Sustained 2% Window701 nits486 nits
HDR Sustained 10% Window716 nits1,062 nits
HDR Sustained 25% Window388 nits1,639 nits
HDR Sustained 50% Window269 nits1,106 nits
HDR Sustained 100% Window128 nits755 nits
HDR ABL0.1060.051
Native Refresh Rate120 Hz120 Hz
Adaptive Sync SupportFreeSync

GSYNC

Variable Refresh Rate
FreeSync

GSYNC

Variable Refresh Rate
Input Lag at 1080p resolution and 60 Hz refresh rate (Game Mode Enabled)10.1 ms10.1 ms
Input Lag at 1080p resolution and 120 Hz refresh rate (Game Mode Enabled)5.2 ms5.7 ms
Input Lag at 1440p resolution and 60 Hz refresh rate (Game Mode Enabled)10.2 ms10.0 ms
Input Lag at 1440p resolution and 120 Hz refresh rate (Game Mode Enabled)5.3 ms5.9 ms
Input Lag at 4K resolution and 60 Hz refresh rate (Game Mode Enabled)10.0 ms9.8 ms
Input Lag at 4K resolution and 60 Hz refresh rate + 10-bit HDR (Game Mode Enabled)10.2 ms9.7 ms
Input Lag at 4K resolution and 60 Hz at 4:4:410.3 ms9.8 ms
Input Lag at 4K resolution and 120 Hz refresh rate (Game Mode Enabled)5.3 ms5.3 ms
Input Lag at 1080p resolution and 60 Hz refresh rate (Game Mode Disabled)88.9 ms76.8 ms
Input Lag at 4K resolution and 60 Hz refresh rate (Game Mode Disabled)88.8 ms76.6 ms
Input Lag at 4K resolution and 60 Hz refresh rate With Interpolation84.4 ms20.8 ms
PricingCheck price on Amazon.Check price on Amazon.

Screen Sizes

You can take a look at the available screen sizes, as well as the associated model numbers, for the LG and Samsung televisions below:

C1:

  • 48″ (OLED48C1PUB)
  • 55″ (OLED55C1PUB)
  • 65″ (OLED65C1PUB)
  • 77″ (OLED77C1PUB)
  • 83″ (OLED83C1PUA)

QN90A:

  • 50″ (QN50QN90AAFXZA)
  • 55″ (QN55QN90AAFXZA)
  • 65″ (QN65QN90AAFXZA)
  • 75″ (QN75QN90AAFXZA)
  • 85″ (QN85QN90AAFXZA)

HDMI Ports

The C1 from LG comes with four HDMI 2.1 ports, which is three more than the QN90A from Samsung.

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

C1:

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

QN90A:

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

Legacy Consoles Support

The LG C1 and Samsung QN90A both come with a cable/antenna tuner that you should be able to utilize to connect retro systems like the NES, Super NES, Sega Master System and Sega Genesis.

Neither of these TVs include a composite input. Therefore, you will need a composite-to-HDMI adapter in order to be able to connect old consoles such as the Nintendo 64, GameCube, Wii, PS1, PS2, Sega Saturn, Dreamcast and Xbox.

HDR Features

Dolby Vision, a format used by Xbox Series S and Xbox Series X, is supported by the C1 but not the QN90A.

Both of these TVs do support HDR10, a format used by the PS4, PS4 Pro, PS5, Xbox One S, Xbox One X, Xbox Series S and Xbox Series X.

While the QN90A supports HDR10+ and the C1 doesn’t, that particular format isn’t used by videogames.

One last difference is that the QN90A uses local dimming. This feature isn’t needed for the C1 as the LG TV is equipped with an OLED screen.

You can find the full list of HDR features for both televisions below:

C1:

  • Dolby Vision
  • HDR10
  • HLG
  • Wide Color Gamut

QN90A:

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

Contrast Ratios

The C1 has the advantage when it comes to contrast as it uses an OLED screen that provides an infinite to 1 ratio.

According to RTINGS.com, the QN90A has a passable native ratio of 3,510 to 1 in addition to an excellent local dimming ratio of 26,534 to 1.

HDR Brightness in Game Mode

On the other hand, the Samsung QN90A has much better HDR output.

According to tests from RTINGS.com, the QN90A can reach 1,862 nits when you are playing a game by using the TV’s game mode setting. In comparison, the C1 can reach 611 nits in the same scenario.

You can find RTINGS’ test results for the HDR brightness output of the C1 and QN90A below:

HDR Real Scene Highlight

  • C1: 611 nits
  • QN90A: 1,862 nits

HDR Peak 2% Window

  • C1: 737 nits
  • QN90A: 709 nits

HDR Peak 10% Window

  • C1: 743 nits
  • QN90A: 1,614 nits

HDR Peak 25% Window

  • C1: 403 nits
  • QN90A: 1,655 nits

HDR Peak 50% Window

  • C1: 285 nits
  • QN90A: 1,110 nits

HDR Peak 100% Window

  • C1: 162 nits
  • QN90A: 757 nits

HDR Sustained 2% Window

  • C1: 701 nits
  • QN90A: 486 nits

HDR Sustained 10% Window

  • C1: 716 nits
  • QN90A: 1,062 nits

HDR Sustained 25% Window

  • C1: 388 nits
  • QN90A: 1,639 nits

HDR Sustained 50% Window

  • C1: 269 nits
  • QN90A: 1,106 nits

HDR Sustained 100% Window

  • C1: 128 nits
  • QN90A: 755 nits

HDR ABL

  • C1: 0.106
  • QN90A: 0.051

Refresh Rate

The C1 and QN90A both have a maximum refresh rate 120 Hz, which means that you can play Xbox Series S and Xbox Series X games at up to 120 frames per second in 1080p, 1440p and 4K resolutions.

For PlayStation 5 games, you should be able to play at 120 fps in 1080p and 4K.

Adaptive Sync Support

Both the LG C1 and Samsung QN90A support the FreeSync, GSYNC and Varabile Refresh Rate modes.

In the PC gaming space, FreeSync is used by AMD PC graphics cards while GSYNC is used by NVIDIA PC graphics cards.

In the console space, Variable Refresh Rate are used by the PS5, Xbox Series X and Xbox Series S.

These adaptive sync modes will remove any screen stutters and tearing from videogames that run at an unstable frame rate.

Input Lag in Game Mode

According to tests from RTINGS.com, the C1 and QN90A are pretty much identical in terms of input lag when playing a videogame using the game mode settings of these television sets. If there is a difference, it is only a half a millisecond at most.

You can find RTINGS’ input delay test results for the C1 and QN90A below:

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

  • C1: 10.1 ms
  • QN90A: 10.1 ms

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

  • C1: 5.2 ms
  • QN90A: 5.7 ms

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

  • C1: 10.2 ms
  • QN90A: 10.0 ms

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

  • C1: 5.3 ms
  • QN90A: 5.9 ms

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

  • C1: 10.0 ms
  • QN90A: 9.8 ms

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

  • C1: 10.2 ms
  • QN90A: 9.7 ms

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

  • C1: 5.3 ms
  • QN90A: 5.3 ms

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

  • C1: 10.3 ms
  • QN90A: 9.8 ms

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

  • C1: 88.9 ms
  • QN90A: 76.8 ms

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

  • C1: 88.8 ms
  • QN90A: 76.6 ms

4K resolution and 60 Hz refresh rate with Interpolation

  • C1: 84.4 ms
  • QN90A: 20.8 ms