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LG C5 OLED TV vs Samsung OLED S90H 55-inch 4K TV

Both are 4K OLEDs with 144Hz-plus gaming support and four HDMI 2.1 ports, so the picture fundamentals are close. The LG C5 runs webOS with Dolby Vision and Dolby Atmos, and owners praise its brightness and color; the Samsung S90H counters with HDR10+ and a 165Hz panel. Reviewers of the C5 report software bugs, remote quirks and forced ads, so the Samsung is the smoother pick if you want fewer annoyances, while the C5 suits Dolby Vision fans and LG's app ecosystem.

  • Choose the LG C5 if you want Dolby Vision and Dolby Atmos support, LG's webOS apps and a 144Hz OLED with strong owner praise for brightness and color.
  • Choose the Samsung S90H if you want a 165Hz OLED with HDR10+ and Samsung's Tizen platform, and you would rather avoid the C5's reported software bugs and ad-heavy interface.

Prices

  • LG C5 OLED TV: $1,299.95 at Amazon (last seen Nov 9)
  • Samsung OLED S90H 55-inch 4K TV: $1,199.99 at Merlin's TV (checked today)
  • Difference: the Samsung OLED S90H 55-inch 4K TV is $99.96 cheaper than the LG C5 OLED TV at the latest prices (Nov 9 and Nov 10)
LG
LG C5

LG C5 OLED TV

LG C5

4.8(18,000 ratings)
$1,299.95at AmazonChecked 11 h ago
See all prices and details
Visit Amazon

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

Pros
  • Dolby Vision and Dolby Atmos for film fans
  • Bright OLED panel with deep blacks and wide viewing angles
  • Four HDMI 2.1 ports and 144Hz VRR for consoles and PC
  • Owners say the built-in sound is good enough without a soundbar
Cons
  • Reported software bugs: sound dropouts, ARC disconnects, app crashes
  • Remote cursor jumps and forced ads frustrate some owners
  • No HDR10+ support
  • Fixed stand does not swivel
Samsung
Samsung 55-inch OLED 4K Vision AI Smart TV QN55S90HAEXZA

Samsung OLED S90H 55-inch 4K TV

Samsung 55-inch OLED 4K Vision AI Smart TV QN55S90HAEXZA

$1,199.99at Merlin's TVChecked 9 h ago
See all prices and details
Visit Merlin's TV
Pros
  • 165Hz panel with G-Sync and FreeSync Premium
  • HDR10+ and OLED HDR+ scene-by-scene brightness
  • Tizen platform with Samsung Vision AI Companion
  • Glare-free coating with PANTONE-validated color
Cons
  • No Dolby Vision
  • No Dolby Atmos badge; 2.1 channel audio only
  • Fewer free channels and app extras than LG's webOS
  • Vision AI features add interface layers some users skip

What separates them

LG C5 OLED TVSamsung OLED S90H 55-inch 4K TV
HDR format supportDolby Vision, HDR10 and HLGHDR10+ and OLED HDR+; no Dolby Vision
Refresh rate120Hz native, up to 144Hz with VRRUp to 165Hz with Motion Xcelerator
Smart platformwebOS 25 with over 300 free LG Channels and up to 5 years of updatesTizen with Samsung Vision AI Companion
AudioDolby Atmos, 2.1 channel; owners say a soundbar is not needed2.1 channel with AI sound optimization
Gaming syncNVIDIA G-Sync and AMD FreeSync PremiumNVIDIA G-Sync and AMD FreeSync Premium
Software stabilityOwners report sound dropouts, ARC disconnects and app crashesFewer reported glitches in owner feedback
Interface and adsForced ads and data collection; several clicks to reach regular TVTizen home screen, generally less ad friction reported
StandFixed stand, not swivel; some buyers plan a separate standSlim profile, 300x200mm VESA mount

Price history

$1,499.99$781.60
Oct 27Nov 10
  • LG C5 OLED TV: lowest $781.60 on Nov 2 at Walmart; $851.97 on Nov 10.
  • Samsung OLED S90H 55-inch 4K TV: lowest $1,297.99 on Oct 31 at Best Buy.

Prices at every store

LG C5 OLED TV

  • MercariPre-owned

    In stock

    $640.00Free shippingChecked 22 h ago
    Visit Mercari
  • AmazonNew

    Availability unknown

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

    $1,299.95Free shippingChecked 11 h ago
    Visit Amazon
  • acostaandsons.comNew

    Availability unknown

    $1,499.96Checked Nov 7
    Visit acostaandsons.com
  • Deranleau'sNew

    Availability unknown

    $1,499.99Checked Nov 7
    Visit Deranleau's

Also available at

  • Best BuyCheck price at Best Buy
  • WalmartCheck price at Walmart
  • ShopCheck price at Shop
All 4 stores and price history →

Samsung OLED S90H 55-inch 4K TV

  • Merlin's TVNew

    In stockReturn policy

    $1,199.99Checked 9 h ago
    Visit Merlin's TV
  • Best BuyNew

    Availability unknown

    $1,297.99Checked Oct 31
    Visit Best Buy
  • B&H Photo-Video-AudioNew

    Availability unknown

    $1,297.99Checked Oct 31
    Visit B&H Photo-Video-Audio
  • WalmartNew

    Availability unknown

    $1,297.99Checked Oct 31
    Visit Walmart

Also available at

  • Kaybee SecurityCheck price at Kaybee Security
All 10 stores and price history →

Specs compared

SpecLG C5 OLED TVSamsung OLED S90H 55-inch 4K TV
Display TypeOLEDOLED
Resolution4K3840 x 2160
HDTV Format4K UHD4K
Refresh Rate144Hz165Hz
HDMI Ports4HDMI x4
colorBlackBlack
High DefinitionYesYes
Screen FormFlatFlat
Assistant SupportGoogle Assistant, Amazon AlexaGoogle Assistant, Amazon Alexa
HDRYesYes
ConnectivityBluetooth, Wi-Fi, IrDA, HDMIBluetooth, Wi-Fi, USB, HDMI, Ethernet, Optical …
Screen Size77 inches54.6"
Show all 40 specsShow fewer specs
SpecLG C5 OLED TVSamsung OLED S90H 55-inch 4K TV
ProcessorAI ProcessorNQ4 Ai Gen3 Processor
Network FunctionalitySmart TV, Streaming—
Supported Resolutions4K—
Backlight TechnologyOLED—
Display HighlightsHDR—
Anti-GlareYes—
Max Resolution V-SyncVRR—
Display Aspect Ratio16:9—
Dynamic Contrast RatioInfinite contrast—

What reviewers say

LG C5 OLED TV

  • 4.8 / 518,000 ratings

With 4.8 out of 5 from about 18,000 ratings, owners are largely enthusiastic about the C5's picture and gaming features. They praise crisp, vivid images with deep blacks, even pixels and easy setup. The main complaints are value for money, banding in dark scenes and the fixed stand.

What people mention
  • Picture qualityPraisedOwners praise the crisp, vivid picture, rich color and perfect blacks, especially for dark-room movies.
  • BrightnessMixedMany say the high brightness makes the picture pop, but some find it less bright or colorful than competing OLEDs in well-lit rooms.
  • GamingPraisedGamers like the 144Hz VRR, low response time and four HDMI 2.1 ports.
  • ReflectionsMixedThe anti-glare coating helps, but owners still notice reflections in daylight.
Reviews
  • Best OLED TVs - Product Finder | Tom's Guide - CategoriesSearch
  • 65-inch LG C5 OLED TV is now cheaper than entry-level B5 OLED at less than $1,000 - Deal | 65-inch LG C5 OLED TV is now cheaper than entry-l
  • Best 75-Inch (and up) TVs
  • The Best 75-Inch (and Up) TVs for 2026
  • The best Prime Day deals on LG, Samsung, and more 4K TVs
  • The Best 65-Inch TVs for 2026

Questions and answers

Which is better for movies?
The LG C5, because it supports Dolby Vision and Dolby Atmos, which most streaming films use. The Samsung S90H handles HDR10+ instead, so it suits Samsung-heavy libraries.
Which is better for gaming?
The Samsung S90H has the higher 165Hz refresh rate, but both support VRR, G-Sync and FreeSync Premium with four HDMI 2.1 ports. The gap matters mainly for high-frame-rate PC play.
Which has fewer software problems?
Owner reports point to the Samsung S90H being smoother. C5 owners describe sound dropouts, ARC disconnects and app crashes, plus remote cursor quirks.
Is the LG C5 bright enough for a bright room?
Yes. Owners consistently call the C5 bright and vivid, and its Brightness Booster helps in lit rooms. The Samsung's glare-free coating is the stronger pick for a window-facing wall.
Does either need a soundbar?
The C5's built-in sound draws praise and many owners skip a soundbar. The S90H's 2.1 channel system is fine for everyday viewing but benefits from a bar for big action scenes.

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Image Contrast Ratio
Near-infinite
—
Viewing AngleWide—
Menu LanguageSpanish, English, French—
Color TemperatureYes—
Smart TVYes—
Internet Streaming ServicesNetflix, Disney+—
Network ConnectivityEthernet—
Video InterfaceHDMI—
PC InterfaceHDMI—
CEC EnabledYes—
Expansion SlotsCommon Interface (CI) slot—
Supported Streaming ServicesNetflix, Prime Video, YouTube, HBO, Disney+—
Width73.8 in wide—
Depth1.9 in deep—
Display size options42in, 48in, 55in, 65in, 77in, 83in—
Screen technology4K W-OLED—
HDR formatsDolby Vision IQ, HDR10, HLG—
Gaming features144Hz, ALLM, FreeSync, G-Sync—
Operating systemWebOS—
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