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The PerfectRec TV team Learn more
Updated January 10, 2024·
Choosing between the LG NANO90 and the Sony X90K depends on what you value most for your viewing experience. The LG NANO90 is more affordable and still delivers good overall performance, making it suitable for mixed usage. On the other hand, the Sony X90K, while somewhat more expensive, offers better picture quality, particularly in dark rooms, and has a higher peak brightness making it more suitable for well-lit environments. Both TVs support gaming features and have similar audio quality, but if having slightly smoother gradients and better local dimming is important to you, especially for movie watching, the Sony X90K would be the better choice despite the higher cost. Give Feedback
this description is based on the product variant with some specs and product variant with some specs. At the time of writing, the variant with some specs cost some dollars and the variant with some specs cost some dollars.
Advantages of the LG NANO90 (LCD)
- Very good reflections
Advantages of the Sony X90K (LCD)
- Very good for bright room
- Good for dark room
- Good for movies & TV
- Good for sports
- Very good for news, talk, & other TV
- Very good for cartoons & animation
- Best in class for upscaling
- Best in class motion processing
Key differences
Picture Quality
6.1
7.7
5.28/10
CONTRAST
7.38/10
6.6/10
COLOR VOLUME SCORE
7.8/10
LED FALD
PANEL TYPE
LED FALD
IPS
PANEL SUB-TYPE
TBD
The Sony X90K (LCD) has good picture quality, while the LG NANO90 (LCD) has only fair picture quality.
Movies & TV
5.6
7.5
5.28/10
CONTRAST
7.38/10
5.3/10
BLACK UNIFORMITY
6.1/10
7.5/10
UPSCALING
10.0/10
Yes
HDR10 SUPPORT
Yes
No
HDR10+ SUPPORT
No
Yes
DOLBY VISION SUPPORT
Yes
The Sony X90K (LCD) is good for movies & TV, while the LG NANO90 (LCD) is poor.
The Sony X90K is considered good for watching movies and cinematic TV primarily due to its superior contrast and black uniformity, which ensure deep blacks and more detailed dark scenes, as well as having good out-of-the-box colors and color volume for vibrant and accurate hues. In contrast, the LG NANO90 is seen as poor for these purposes because it has a lower contrast and worse black uniformity which can lead to grayer blacks and less satisfying dark scenes, and the colors out of the box and color volume are not as impressive, potentially resulting in less accurate and less rich color reproduction.
Cartoons & Animation
5.6
8.0
6.5/10
COLOR GAMUT SCORE
7.7/10
6.6/10
COLOR VOLUME SCORE
7.8/10
7.8/10
SDR BRIGHTNESS SCORE
8.7/10
4.3/10
COLORS OUT OF THE BOX SCORE
7.0/10
5.9/10
GRAY UNIFORMITY
6.6/10
The Sony X90K (LCD) is very good for cartoons & animation, while the LG NANO90 (LCD) is poor.
News, Talk, & Other TV
6.4
8.7
7.8/10
SDR BRIGHTNESS SCORE
8.7/10
7.5/10
UPSCALING
10.0/10
The Sony X90K (LCD) is very good for news, talk, & other TV, while the LG NANO90 (LCD) is only fair.
The Sony X90K performs better than the LG NANO90 for news and other TV programs as it has superior upscaling capabilities and presents colors more accurately out of the box, which are critical for clear and vibrant content viewing. Additionally, the Sony X90K's SDI Brightness is higher, ensuring better visibility in various lighting conditions, unlike the LG NANO90, which may not be as bright.
Bright Room
6.9
8.0
6.3/10
VIEWING ANGLE
5.4/10
7.8/10
SDR BRIGHTNESS SCORE
8.7/10
7.2/10
HDR BRIGHTNESS SCORE
8.3/10
8.0/10
REFLECTIONS SCORE
6.3/10
The Sony X90K (LCD) is very good for bright room, while the LG NANO90 (LCD) is only fair.
The Sony X90K performs better in bright rooms primarily because it has higher SDR and HDR brightness, allowing it to combat glare more effectively than the LG NANO90, and although the LG NANO90 has better reflection handling, the superior brightness of the Sony X90K compensates for this advantage. Additionally, the Sony X90K's superior contrast and color performance contribute to a more vivid and detailed picture in well-lit environments.
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Key similarities
Sports
6.8
7.1
7.5/10
MOTION PROCESSING
10.0/10
120Hz
REFRESH RATE
120Hz
8.7/10
INPUT LAG SCORE
7.0/10
7.5/10
UPSCALING
10.0/10
7.8/10
SDR BRIGHTNESS SCORE
8.7/10
Yes
HLG SUPPORT
Yes
Although they have very similar scores, PerfectRec considers Sony X90K (LCD) to be good for sports, while the LG NANO90 (LCD) is only fair.
The LG NANO90 has a slower response time and less effective motion processing compared to the Sony X90K, affecting the clarity of fast-moving scenes common in sports. Additionally, the Sony X90K handles reflections better and offers wider viewing angles, making it more suitable for group viewing in various lighting conditions.
Gaming
8.0
8.1
7.6/10
RESPONSE TIME SCORE
8.0/10
8.7/10
INPUT LAG SCORE
7.0/10
7.5/10
MOTION PROCESSING
10.0/10
50.0/100
GAMING LOCAL DIMMING
76.0/100
7.6/10
GAME HDR BRIGHTNESS SCORE
8.6/10
The Sony X90K (LCD) and LG NANO90 (LCD) are both very good for gaming.
The LG NANO90 and Sony X90K both provide excellent gaming experiences due to their low input lag and fast response times, which minimize motion blur and delay between player actions and onscreen reactions. The LG NANO90 stands out with its very low input lag, making it ideal for competitive gaming, while the Sony X90K excels with its superior response time, ensuring smoother visuals in fast-paced games.
Cost
$1,500
$1,578
$500
$1,000
$1,500
$2,000
$2,500
The LG NANO90 (LCD) has a price of $1,500 and the Sony X90K (LCD) costs $1,578.
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How the LG NANO90 (LCD) and the Sony X90K (LCD) compare to other TVs
Spec Comparison
 |  | |
| LG NANO90 (LCD) | Sony X90K (LCD) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,500 | $1,578 | ||
Brand | |||
Brand | LG | Sony | |
Release Date | |||
Release Date | March 3, 2021 | May 3, 2022 | |
Full name | |||
Full name | 75NANO90 | XR-75X90K | |
Screen Size | |||
Screen Size | 75" | 75" | |
Screen Resolution | |||
Screen Resolution | 4K | 4K | |
TV FEATURES | |||
|---|---|---|---|
Operating System | |||
Operating System | webOS | Android TV | |
Sound Quality Score | |||
Sound Quality Score | 6.4/10 | 8/10 | |
NextGen Ready | |||
NextGen Ready | No | Yes | |
HDMI Ports | |||
HDMI Ports | 4 | 4 | |
Coax Ports | |||
Coax Ports | 1 | 1 | |
DISPLAY QUALITY SCORES | |||
|---|---|---|---|
Picture Quality Score | |||
Picture Quality Score | 6.1/10 | 7.7/10 | |
Bright Room Score | |||
Bright Room Score | 7/10 | 8/10 | |
Gaming Score | |||
Gaming Score | 8/10 | 8.1/10 | |
Movies & TV Score | |||
Movies & TV Score | 5.6/10 | 7.5/10 | |
Sports Score | |||
Sports Score | 6.8/10 | 7.2/10 | |
PHYSICAL | |||
|---|---|---|---|
Dimensions w/o Stand (H x W x D) | |||
Dimensions w/o Stand (H x W x D) | 37.9" x 65.9" x 1.8" | 37.9" x 66" x 2.9" | |
Dimensions with Stand (H x W) | |||
Dimensions with Stand (H x W) | 40.5" x 65.9" | 39.1" x 66" | |
Weight without Stand | |||
Weight without Stand | 83.8 lbs | 75.8 lbs | |
VESA Mount | |||
VESA Mount | 400 x 400 | 300 x 300 | |
DISPLAY | |||
|---|---|---|---|
Color Depth | |||
Color Depth | 10 bit | 10 bit | |
Black Frame Insertion | |||
Black Frame Insertion | Yes | Yes | |
Auto Low Latency Mode | |||
Auto Low Latency Mode | Yes | Yes | |
Contrast | |||
Contrast | 5.3/10 | 7.4/10 | |
Local Dimming | |||
Local Dimming | 5.2/10 | 7.2/10 | |
SOUND | |||
|---|---|---|---|
Speaker Setup | |||
Speaker Setup | 2.2 | 2.0 | |
Speaker Power | |||
Speaker Power | 40 W | 30 W | |
Dolby Atmos | |||
Dolby Atmos | Yes | Yes | |
DTS:X | |||
DTS:X | No | Up to DTS Digital Surround, Bypass only | |
Shopping
LG NANO90 (LCD)
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Dig into reviews and images
Techradar
John Archer | July 2021
"Here we have HDR pictures that look bright, but also manage to typically hit decently deep black levels.WebOS continues, though, to be one of the easiest to use. Connections are strong for a mid-range TV. Native 4K pictures look crisp and detailed."
Sony X90K (LCD)
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Dig into reviews and images
Techradar
Al Griffin | December 2022
"As Sony’s next-to-flagship LCD TV, the X90K series delivers impressive performance for the price. The XR90K had fairly accurate out-of-box color. The TV’s multi-position stand lets you either set the screen flush with any stand its mounted on or elevate it to clear space for a soundbar. With the latter option, you get around 3 inches of clearance enough to accommodate most soundbars. The X90K’s excellent suite of gaming features ranks it up there with the best 120 Hz 4K TVs."
Get a great deal on the LG NANO90 (LCD) or the Sony X90K (LCD)
About LG
LG, a prominent TV brand from Korea, has played a significant role in popularizing OLED TVs. OLED technology is hailed as the future of TV technology. Their TVs employ WebOS, a proprietary smart TV software that not only offers seamless functionality but also includes gaming-specific features, earning praise from players worldwide. Often regarded as the gateway to unparalleled viewing experiences, LG's mid-range OLEDs come highly recommended, making them a worthwhile investment for those willing to stretch their budget for superior quality.
About Sony
Sony stands as a highly experienced and widely trusted TV manufacturer, earning a reputation that surpasses all others. A Japanese company, Sony has been making TVs for far longs than it has been making Playstation game consoles. Sony's high-end TVs are often regarded as the ultimate choice for videophiles, representing the epitome of quality, albeit at a premium price point. Renowned for their advanced and precise motion handling, as well as their cutting-edge local dimming algorithms, Sony consistently delivers unparalleled performance in these areas. They include Google TV software with all their TV sets, which grants access to the largest selection of apps available and they also include Bravia Core which is a movie streaming platform specifically for Sony TVs that offers higher picture quality by using more bandwidth.
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This information was produced and vetted by the PerfectRec TVs team. We are a product research and recommendation organization that meticulously reviews and evaluates the latest TV information and makes it digestible for you.
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