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Company ProductName Specs
Company ProductName Specs
Advantages of the LG B4 (OLED)
- Excellent for dark room
- Excellent for movies & TV
- Very good for sports
- Very good for use as monitor
- Best in class viewing angle
- Excellent reflections
Advantages of the Sony X90K (LCD)
- Very good for bright room
- Best in class for upscaling
- Best in class motion processing
Key differences
Picture Quality
8.8
7.7
10/10
CONTRAST
7.38/10
8.1/10
COLOR VOLUME SCORE
7.8/10
WOLED
PANEL TYPE
LED FALD
WBC
PANEL SUB-TYPE
TBD
The LG B4 (OLED) has very good picture quality, while the Sony X90K (LCD) has good picture quality.
Movies & TV
9.2
7.5
10/10
CONTRAST
7.38/10
10.0/10
BLACK UNIFORMITY
6.1/10
7.0/10
UPSCALING
10.0/10
Yes
HDR10 SUPPORT
Yes
No
HDR10+ SUPPORT
No
Yes
DOLBY VISION SUPPORT
Yes
The LG B4 (OLED) is excellent for movies & TV, while the Sony X90K (LCD) is good.
Sports
8.3
7.1
8.0/10
MOTION PROCESSING
10.0/10
120Hz
REFRESH RATE
120Hz
10.0/10
INPUT LAG SCORE
7.0/10
7.0/10
UPSCALING
10.0/10
7.1/10
SDR BRIGHTNESS SCORE
8.7/10
Yes
HLG SUPPORT
Yes
The LG B4 (OLED) is very good for sports, while the Sony X90K (LCD) is good.
Gaming
8.9
8.1
9.4/10
RESPONSE TIME SCORE
8.0/10
10.0/10
INPUT LAG SCORE
7.0/10
8.0/10
MOTION PROCESSING
10.0/10
100.0/100
GAMING LOCAL DIMMING
76.0/100
7.5/10
GAME HDR BRIGHTNESS SCORE
8.6/10
The LG B4 (OLED) and Sony X90K (LCD) are both very good for gaming, though the LG B4 (OLED) is somewhat better.
Cartoons & Animation
8.7
8.0
8.3/10
COLOR GAMUT SCORE
7.7/10
8.1/10
COLOR VOLUME SCORE
7.8/10
7.1/10
SDR BRIGHTNESS SCORE
8.7/10
8.5/10
COLORS OUT OF THE BOX SCORE
7.0/10
9.5/10
GRAY UNIFORMITY
6.6/10
The LG B4 (OLED) and Sony X90K (LCD) are both very good for cartoons & animation, though the LG B4 (OLED) is somewhat better.
Bright Room
7.3
8.0
9.5/10
VIEWING ANGLE
5.4/10
7.1/10
SDR BRIGHTNESS SCORE
8.7/10
7.2/10
HDR BRIGHTNESS SCORE
8.3/10
9.2/10
REFLECTIONS SCORE
6.3/10
The Sony X90K (LCD) is very good for bright room, while the LG B4 (OLED) is good.
Cost
$2,200
$998
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
The LG B4 (OLED) has a price of $2,200 and the Sony X90K (LCD) costs $998.
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Key similarities
News, Talk, & Other TV
8.3
8.7
7.1/10
SDR BRIGHTNESS SCORE
8.7/10
7.0/10
UPSCALING
10.0/10
The Sony X90K (LCD) and LG B4 (OLED) are both very good for news, talk, & other TV.
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How the LG B4 (OLED) and the Sony X90K (LCD) compare to other TVs
Spec Comparison
 |  | |
| LG B4 (OLED) | Sony X90K (LCD) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$2,200 | $998 | ||
Brand | |||
Brand | LG | Sony | |
Release Date | |||
Release Date | March 1, 2024 | May 2, 2022 | |
Full name | |||
Full name | OLED65B4 | XR-65X90K | |
Screen Size | |||
Screen Size | 65" | 65" | |
Screen Resolution | |||
Screen Resolution | 4K | 4K | |
TV FEATURES | |||
|---|---|---|---|
Operating System | |||
Operating System | WebOS | Android TV | |
Sound Quality Score | |||
Sound Quality Score | 7/10 | 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 | 8.9/10 | 7.7/10 | |
Bright Room Score | |||
Bright Room Score | 7.4/10 | 8/10 | |
Gaming Score | |||
Gaming Score | 9/10 | 8.1/10 | |
Movies & TV Score | |||
Movies & TV Score | 9.3/10 | 7.5/10 | |
Sports Score | |||
Sports Score | 8.3/10 | 7.2/10 | |
PHYSICAL | |||
|---|---|---|---|
Dimensions w/o Stand (H x W x D) | |||
Dimensions w/o Stand (H x W x D) | 57.0" x 32.8" x 1.8" | 32.8" x 57.2" x 2.8" | |
Dimensions with Stand (H x W) | |||
Dimensions with Stand (H x W) | 57.0" x 35.3" x 9.3" | 34" x 57.2" | |
Weight without Stand | |||
Weight without Stand | 37.7 lbs | 50.5 lbs | |
VESA Mount | |||
VESA Mount | 300 x 200 | 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 | 10/10 | 7.4/10 | |
Local Dimming | |||
Local Dimming | 10/10 | 7.2/10 | |
SOUND | |||
|---|---|---|---|
Speaker Setup | |||
Speaker Setup | 2.0 | 2.0 | |
Speaker Power | |||
Speaker Power | 20 W | 30 W | |
Dolby Atmos | |||
Dolby Atmos | Yes | Yes | |
DTS:X | |||
DTS:X | Yes | Up to DTS Digital Surround, Bypass only | |
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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 B4 (OLED) 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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About the TV team
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