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LG B5 Series 65" OLED TV vs Samsung 42” S90H OLED 4K Smart TV

These are different tools. The LG B5 is a 65-inch OLED for a living room: big, bright enough for most rooms, with Dolby Vision, four HDMI 2.1 ports and webOS. The Samsung S90H is a 42-inch OLED built for a desk or bedroom, with a glare-free coating, a 165Hz panel and Tizen. Reviewers rate the Samsung higher (4.9 from 870 versus 4.5 from 374), but the LG's extra size matters more than any spec for most buyers. Pick by room and screen size first, then by features.

  • Choose the LG B5 if you want the biggest OLED picture for a living room and need Dolby Vision and a wide set of streaming apps.
  • Choose the Samsung S90H if you sit close, game at high frame rates, or have a bright room where reflections are a problem.

Prices

  • LG B5 Series 65" OLED TV: $917.00 at Walmart (checked today)
  • Samsung 42” S90H OLED 4K Smart TV: $849.00 at Greentoe (checked today)
  • Difference: the Samsung 42” S90H OLED 4K Smart TV is $68.00 cheaper than the LG B5 Series 65" OLED TV today
LG
LG 65" OLED B5 Series 4K UHD OLED AI Smart webOS 25 TV

LG B5 Series 65" OLED TV

LG 65" OLED B5 Series 4K UHD OLED AI Smart webOS 25 TV

4.5(374 ratings)
$917.00at WalmartChecked 47 min ago
See all prices and details
Visit Walmart

Store links may earn us a commission. Price via Klarna.

Pros
  • Big 65-inch OLED panel with perfect blacks and wide viewing angles
  • Dolby Vision and Dolby Atmos support
  • Four HDMI ports with eARC, ALLM and VRR for consoles
  • webOS is easy to navigate and has plenty of free channels
Cons
  • Glossy screen reflects lamps and windows
  • 120Hz panel is slower than the Samsung's 165Hz
  • Alpha 8 processor is a step below LG's brighter C and G series
  • Built-in sound is thin for a set this size
Samsung
Samsung 42” Class S90H Series OLED 4K UHD Samsung Vision AI Smart Tizen TV 2026

Samsung 42” S90H OLED 4K Smart TV

Samsung 42” Class S90H Series OLED 4K UHD Samsung Vision AI Smart Tizen TV 2026

4.9(870 ratings)
$849.00at GreentoeChecked 2 h ago
See all prices and details
Visit Greentoe
Pros
  • Glare Free coating handles bright rooms well
  • 165Hz with G-Sync and FreeSync Premium suits fast gaming
  • Sharp, uniform picture with deep blacks, per owners
  • Tizen is quick and simple to set up
Cons
  • 42 inches is small for a main living-room TV
  • No Dolby Vision
  • 20W speakers make dialogue hard to hear, owners say
  • Picture settings take work to dial in, and some return it for the S95H

What separates them

LG B5 Series 65" OLED TVSamsung 42” S90H OLED 4K Smart TV
Screen size65 inches, a living-room set42 inches, a desk or bedroom set
HDR formatsDolby Vision, HDR10, HLGHDR10+, HDR10+ Adaptive, HLG; no Dolby Vision
Refresh rate120Hz with VRR and G-SyncUp to 165Hz with VRR, G-Sync and FreeSync Premium
Screen surfaceStandard glossy OLED finishGlare Free coating that cuts reflections in daylight
SoundDolby Atmos and FILMMAKER MODE; owners still add a soundbar20W speakers; owners report muffled dialogue
Smart platformwebOS with 350+ free LG ChannelsTizen with Samsung Vision AI
ProcessorAlpha 8 AI Processor Gen2NQ4 AI Gen3 Processor
Owner satisfaction4.5 from 374 ratings4.9 from 870 ratings

Price history

$995.00$849.00
Nov 7Nov 13
  • LG B5 Series 65" OLED TV: lowest $917.00 on Nov 8 at Walmart; $917.00 on Nov 13.
  • Samsung 42” S90H OLED 4K Smart TV: lowest $849.00 on Nov 11 at Greentoe; $849.00 on Nov 13.

Prices at every store

LG B5 Series 65" OLED TV

  • WalmartNew

    In stock

    $917.00Free shippingChecked 47 min ago
    Visit Walmart
  • Sam's ClubNew

    In stock

    $999.99Free shippingChecked 47 min ago
    Visit Sam's Club
  • Best BuyNew

    Availability unknown

    $1,079.99Checked Nov 7
    Visit Best Buy
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $1,246.95Free shippingChecked 1 h ago
    Visit Amazon

Store links may earn us a commission. Some prices via Klarna.

All 7 stores and price history →

Samsung 42” S90H OLED 4K Smart TV

  • GreentoeNew

    In stockSold by TV's & Home Theater

    $849.00Free shippingChecked 2 h ago
    Visit Greentoe
  • NeweggNew

    In stock

    $888.58Free shippingChecked 47 min ago
    Visit Newegg
  • WalmartNew

    In stockSold by Walts TVReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $897.99Free shippingChecked 47 min ago
    Visit Walmart
  • Best BuyNew

    In stock

    $897.99Free shippingChecked 47 min ago
    Visit Best Buy

Store links may earn us a commission. Some prices via Klarna.

All 22 stores and price history →

Specs compared

SpecLG B5 Series 65" OLED TVSamsung 42” S90H OLED 4K Smart TV
colorBlackGray
ConnectionsHDMIUSB-A
Screen Resolution3840x2160 (4K Ultra HD)3840x1600
Screen Size (")65.042 in
HDR TypeHDR10, Dolby Vision, HLGHDR10+, HDR10+ Adaptive, HLG, HDR10
Refresh Rate (Hz)120165
Smart TVYesYes
Release Year20252026
HDRYesYes
Operating SystemwebOSTizen
DisplayOLEDOLED
Resolution3840 x 21602160p (4K)
Show all 40 specsShow fewer specs
SpecLG B5 Series 65" OLED TVSamsung 42” S90H OLED 4K Smart TV
High DefinitionYesYes
HDTV Format4K4K
Screen FormFlatFlat
Display TypeOLEDOLED
Assistant SupportGoogle Assistant, Amazon Alexa, SiriGoogle Assistant, Amazon Alexa
Refresh Rate120 Hzup to 165Hz
ConnectivityBluetooth, Wi-Fi, RF, USB, HDMI, Ethernet, Opti…Bluetooth, Wi-Fi, USB, HDMI, Ethernet, Optical …
Supported Streaming ServicesNetflix, Prime Video, Disney+Netflix
Screen designFlat—

What reviewers say

LG B5 Series 65" OLED TV

  • 4.5 / 5374 ratings

Rated 4.5 out of 5 from 374 ratings, the B5 is well liked for its picture in dark rooms and its gaming features for the money. Complaints center on brightness in bright rooms and on sound.

What people mention
  • Picture qualityPraisedOwners say blacks are deep and colors look rich, especially in a dark room.
  • BrightnessCriticisedReviewers say the panel dims in bright rooms and struggles with daylight glare.
  • GamingPraisedPlayers report smooth motion at 120Hz with VRR on consoles.
  • SoundCriticisedOwners find the built-in speakers weak and often add a soundbar.

Samsung 42” S90H OLED 4K Smart TV

  • 4.9 / 5870 ratings

The combination of OLED contrast and the new anti-glare coating is frequently cited as a major improvement over previous generations. Buyers praise ink-like blacks, even screen uniformity and smooth gaming motion, and call setup and Tizen navigation easy. Complaints center on tuning the picture and on dialogue clarity.

What people mention
  • ReflectionsPraisedThe Glare Free technology is highly effective at neutralizing ambient light in bright environments.
  • GamingPraisedThe 165Hz refresh rate and Ultimate Gaming Pack make it a top choice for PC and console gamers.
  • Sound qualityCriticisedThe 20W speakers are described as thin, often requiring an external soundbar for a full experience.
Reviews
  • I found the 4 best OLED Prime Day TV deals starting from $599 - Club Benefits
  • You can get an LG B5 OLED for less than $900
  • I’ve picked 4 TVs that could be your next dream upgrade, whatever your budget — from affordable OLED to bargain big-screens - Become a TechR

Questions and answers

Which is better for a bright living room?
The Samsung S90H, because its Glare Free coating suppresses reflections. The LG B5 has a glossy finish that shows lamps and windows. If your room is dim, the LG's larger panel wins.
Which is better for gaming?
The Samsung S90H. It reaches 165Hz and supports G-Sync and FreeSync Premium. The LG B5 tops out at 120Hz but still handles VRR and ALLM well on all four HDMI ports.
Which has better picture quality?
Both are OLED, so blacks and contrast are close. The LG adds Dolby Vision, which helps on Netflix and Disney+ content. The Samsung's glare-free screen looks better in daylight.
Is the Samsung worth stepping up to over the LG?
Only if you want a smaller set for a desk or a bright room. For a main TV, the LG's 65-inch screen is the bigger upgrade. The Samsung's higher owner rating reflects its niche, not a better living-room TV.
Which lasts longer?
Neither has a clear edge. Both use OLED panels with similar lifespans, and the Samsung carries a one-year warranty. Burn-in risk is low on both with normal mixed viewing.
Do I need a soundbar with either?
Yes for the Samsung, whose 20W speakers draw complaints about dialogue. The LG is louder but still benefits from a soundbar for movies.

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Buying guides that pick them

  • Best 65-inch LG OLED TVs
  • Best value OLED TVs
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  • Best OLED TVs under $1,000
Wi-FiYes—
VESA-MountYes—
Edge-lit LEDNo—
Surround Sound FormatsDolby AC-4, Dolby Digital—
MHLNo—
AmbilightNo—
No. of HDMI (pcs)4—
3DNo—
ARCeARC—
ALLMYes—
Voice AssistantLG ThinQ—
VRRYes—
BrandLG—
Television typeOLED TVs—
Smart techY—
Tv featuresWi-Fi Direct, Bluetooth, High Dynamic Range—
StreamersNetflix, Hulu, Prime Video, Disney+, YouTube, H…—
PlatformwebOS—
Virtual asst.Alexa, Google Assistant—
Picture processing
Praised
The AI-powered processor is noted for adding significant depth and detail to non-4K content.