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Deal.ai › Compare

Samsung OLED S90H 55-inch 4K TV vs Sony A90K 42 inch Ultra HD 4K Smart OLED TV (XR42A90K)

The Samsung S90H is the better pick for most people: it is a 55-inch OLED with a 165Hz panel, four HDMI ports, HDR10+ and OLED HDR+, and support for both Google Assistant and Alexa. The Sony A90K is a smaller 42-inch OLED capped at 120Hz, but its Cognitive Processor XR and low input lag make it a strong console and desktop-size set. Owners praise OLED blacks on both; the Samsung wins on size, brightness handling and gaming refresh rate, while the Sony wins on processing polish and PS5 integration.

  • Choose the Samsung S90H if you want the bigger 55-inch picture, a 165Hz gaming panel with G-SYNC and FreeSync Premium, and both voice assistants built in.
  • Choose the Sony A90K if you need a compact 42-inch OLED for a small room or desk and want Sony's XR processing and PS5-tuned gaming features.

Prices

  • Samsung OLED S90H 55-inch 4K TV: $1,199.00 at The Big Screen Store (checked today)
  • Sony A90K 42 inch Ultra HD 4K Smart OLED TV (XR42A90K): $910.00 at Baillio's (checked today)
  • Difference: the Sony A90K 42 inch Ultra HD 4K Smart OLED TV (XR42A90K) is $289.00 cheaper than the Samsung OLED S90H 55-inch 4K TV today
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

$1,199.00at The Big Screen StoreChecked 2 h ago
See all prices and details
Visit The Big Screen Store
Pros
  • Large 55-inch OLED panel with deep blacks and wide viewing angles
  • 165Hz refresh rate suits fast games and sports
  • HDR10+ and OLED HDR+ boost contrast scene by scene
  • Four HDMI ports and both major voice assistants
  • Glare-reducing coating with PANTONE-validated color
Cons
  • Tizen app layout takes getting used to
  • 2.1-channel audio is modest without a soundbar
  • Heavier at about 32 lbs without stand
Sony
Sony A90K 42 inch Ultra HD 4K Smart OLED TV (XR42A90K)

Sony A90K 42 inch Ultra HD 4K Smart OLED TV (XR42A90K)

4.7(192 ratings)
$910.00at Baillio'sChecked 1 h ago
See all prices and details
Visit Baillio's
Pros
  • Cognitive Processor XR gives natural, realistic picture
  • Very low input lag for gaming, with PS5-specific features
  • Compact 42-inch size fits small rooms and desks
  • Wide viewing angle and near-infinite contrast
  • Chromecast, AirPlay and Miracast built in
Cons
  • 120Hz panel is slower than the Samsung for gaming
  • No HDR10+ support listed
  • Smaller screen limits immersion in a main room
  • No local dimming (typical of OLED)

What separates them

Samsung OLED S90H 55-inch 4K TVSony A90K 42 inch Ultra HD 4K Smart OLED TV (XR42A90K)
Screen size54.6 inches42 inches
Refresh rate165Hz with Motion Xcelerator120Hz with VRR
ProcessorNQ4 AI Gen3 with 4K AI upscalingCognitive Processor XR
HDR formatsHDR10+ and OLED HDR+HDR (no HDR10+ listed)
Smart platformTizen with Vision AI CompanionGoogle TV with Google Assistant
Voice assistantsGoogle Assistant and Amazon AlexaGoogle Assistant
Gaming featuresG-SYNC and FreeSync PremiumVRR, low input lag, PS5 features
Wireless castingWi-Fi and BluetoothChromecast, AirPlay, Miracast

Price history

  • Samsung OLED S90H 55-inch 4K TV: lowest $1,297.99 on Oct 31 at Best Buy.
  • Sony A90K 42 inch Ultra HD 4K Smart OLED TV (XR42A90K): lowest $910.00 on Nov 12 at Baillio's.

Prices at every store

Samsung OLED S90H 55-inch 4K TV

  • The Big Screen StoreNew

    In stockReturn policy

    $1,199.00Checked 2 h ago
    Visit The Big Screen Store
  • Merlin's TVNew

    In stockReturn policy

    $1,199.99Checked 2 h ago
    Visit Merlin's TV
  • DataVisionNew

    In stockReturn policy

    $1,297.99Checked 2 h ago
    Visit DataVision
  • Best BuyNew

    Availability unknown

    $1,297.99Checked Oct 31
    Visit Best Buy

Also available at

  • Kaybee SecurityCheck price at Kaybee Security
All 12 stores and price history →

Sony A90K 42 inch Ultra HD 4K Smart OLED TV (XR42A90K)

  • Baillio'sNew

    In stock

    $910.00Checked 1 h ago
    Visit Baillio's
  • ABC WarehouseNew

    Availability unknown

    $1,298.00Checked 1 h ago
    Visit ABC Warehouse
  • Schaefer'sNew

    Availability unknown

    $1,299.99Checked 1 h ago
    Visit Schaefer's
  • Jetson's ApplianceNew

    Availability unknown

    $1,299.99Checked 1 h ago
    Visit Jetson's Appliance
All 5 stores and price history →

Specs compared

SpecSamsung OLED S90H 55-inch 4K TVSony A90K 42 inch Ultra HD 4K Smart OLED TV (XR42A90K)
Display typeOLEDOLED
Refresh rate165Hz120 Hz
HDMI portsHDMI x44
VESA mount300mm x 200mm (11.8 x 7.9 in.)Yes
Resolution3840 x 21604K UHD
HDTV Format4K4K UHD
ColorBlackTitanium, Black
HDRYesYes
Screen size54.6"—
Native resolution3840x2160—
ProcessorNQ4 Ai Gen3 Processor—
HDR standardsHDR10+, OLED HDR+—
Show all 40 specsShow fewer specs
SpecSamsung OLED S90H 55-inch 4K TVSony A90K 42 inch Ultra HD 4K Smart OLED TV (XR42A90K)
Smart platformTizen—
Audio system2.1 Channel—
USB interfaces3—
Weight without stand32.19 lbs. (14.60 kg)—
High DefinitionYes—
Screen FormFlat—
Assistant SupportGoogle Assistant, Amazon Alexa—
ConnectivityBluetooth, Wi-Fi, USB, HDMI, Ethernet, Optical …—
Network Functionality—Smart TV, Google Assistant

What reviewers say

Sony A90K 42 inch Ultra HD 4K Smart OLED TV (XR42A90K)

  • 4.7 / 5192 ratings

Questions and answers

Which is better for gaming?
The Samsung S90H has the higher 165Hz refresh rate plus G-SYNC and FreeSync Premium, so it suits fast PC and console play. The Sony A90K tops out at 120Hz but has very low input lag and PS5-specific features, so it is close for PlayStation owners.
Which has the better picture?
Both are OLED, so both deliver deep blacks and wide viewing angles. The Samsung adds HDR10+ and OLED HDR+ for scene-by-scene brightness, while the Sony's Cognitive Processor XR is known for natural, realistic color and motion.
Is the bigger Samsung worth stepping up to?
If the TV is for a main room, yes. The 55-inch Samsung gives a much larger image, a faster panel and more HDR formats. The Sony only makes sense if space limits you to a 42-inch set.
Which lasts longer?
Both use OLED panels with similar lifespans under normal use. Neither brand publishes a hard hour rating, so burn-in risk depends more on how you watch (static logos, brightness) than on the model.
Does the Sony work well with a PS5?
Yes. Sony markets the A90K with PS5-exclusive features and input lag as low as 8.5ms, so it pairs naturally with a PlayStation console.
Which has better sound?
The Samsung lists a 2.1-channel system, which gives it a slight edge on paper. Neither set replaces a soundbar for serious movie watching.

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Supported Resolutions
—
4K
Backlight Technology—OLED
Display Highlights—HDR
Max Resolution V-Sync—VRR
Display Aspect Ratio—16:9
Image Contrast Ratio—Near-infinite
Viewing Angle—Wide
Menu Language—ZULU, AFRIKAANS, ARABIC, ASSAMESE, BENGALI
Smart TV—Yes
Internet Streaming Services—Netflix
Network Connectivity—Ethernet, Wi-Fi
Video Interface—HDMI
PC Interface—HDMI
CEC Enabled—Yes (BRAVIA Sync Function)
Expansion Slots—Common Interface Plus (CI+) slot
Connections—Optical S/PDIF, HDMI, RJ45 (LAN), Composite
Height (without legs) (")—21.496
Height (including legs) (")—21.693
Wireless & Streaming—Chromecast, AirPlay, Miracast