Display
54.6", OLED, 3840 x 2160 pixels
54.6
Refresh rate
48 Hz - 165 Hz (hertz)
48 Hz
Dimensions
1225.3 x 708.7 x 40 mm (millimeters)
1225.3
Weight
14.6 kg (kilograms)
14.6 k
Processor
NQ4 AI Gen3 Processor
4
Overview
Fifty-five inches balances gaming and cinema on the Samsung QN55S90H, a 54.6-inch 4K OLED television with One UI Tizen. Its 48–165 Hz range, FreeSync Premium Pro, G-Sync compatibility, VRR and ALLM are supported by four HDMI 2.1 ports. NQ4 AI Gen3 processing adds upscaling and motion control, while the 40W 2.1-channel audio is a practical improvement over the 20W QN42S90H. The 10-bit OLED panel lists 100% DCI-P3 and HDR10+ Advanced, but Samsung provides no typical or peak brightness number. Dolby Vision is also absent. Three USB ports, optical output, 3.5 mm audio and eARC cover external equipment. Buy it if you want a 55-inch OLED TV with 165 Hz gaming and useful onboard sound; skip it if Dolby Vision or published brightness data is non-negotiable.
BrandSamsungPanel TypeOLEDResolution3840 x 2160 (4K)Refresh Rate48 Hz - 165 Hz
Key Highlights
- 3840 x 2160 (4K) on the 54.6-inch OLED panel gives QN55S90H its core viewing specification
- 100 % DCI-P3 and self-emissive OLED pixels support wide colour and pixel-level black control on QN55S90H.
- 48 Hz - 165 Hz with AMD FreeSync Premium Pro, VRR and ALLM gives QN55S90H a strong gaming specification
- One UI Tizen with the NQ4 AI Gen3 Processor handles streaming, upscaling and smart-TV functions in the QN55S90H.
- It keeps the 165 Hz gaming core of the QN48S90H on a 54.6-inch screen with 40W audio.
Who Should Buy the samsung QN55S90H
+ Best For
High-frame-rate gamers
QN55S90H reaches 48 Hz - 165 Hz with four HDMI 2.1 ports
PC and console users
FreeSync Premium Pro, G-Sync compatibility, VRR and ALLM are listed on QN55S90H.
OLED film viewing
self-emissive pixels and 100 % DCI-P3 support dark scenes and wide colour for QN55S90H.
Tizen households
NQ4 AI Gen3 processing handles apps, upscaling and motion features in the QN55S90H.
× Not Ideal For
Dolby Vision users
QN55S90H supports HDR10+ formats instead
Published-brightness buyers
neither typical nor peak output is stated on QN55S90H.
Budget-conscious shoppers
the 165 Hz OLED and HDMI 2.1 specification sits above entry level for QN55S90H.
USB-C display users
no USB-C video or charging input is listed in the QN55S90H.
Display Performance
Refresh Rate
48 Hz - 165 Hz
Supports high-frame-rate gaming and smoother motion in QN55S90H's published specification.
Response Time
Not published
No pixel-response figure is published, so motion clarity should not be inferred from refresh rate alone on QN55S90H.
Brightness
Not published
The source omits normal light output, preventing a meaningful bright-room comparison for QN55S90H.
Contrast
Self-emissive OLED
Individual pixels can switch off for black, although the sheet gives no numerical contrast ratio in the QN55S90H.
Colour Gamut
100 %
100 % DCI-P3 supports wider HDR colour than a basic sRGB-only display as listed for QN55S90H.
HDR
HDR10, HLG (Hybrid Log Gamma), HDR10+, HDR10+ Adaptive, HDR10+ Gaming, HDR10+ Advanced
Format support is broad, but hardware brightness and black control decide the visible result within the QN55S90H specification.
Gaming Performance
Refresh Rate48 Hz - 165 HzHigh-refresh performance is a central strength in QN55S90H's published specification.
Response TimeNot publishedThe sheet provides no dependable pixel-transition figure on QN55S90H.
VRR / Adaptive SyncAMD FreeSync Premium Pro / G-Sync Compatible / VRRSupports variable-refresh play from modern AMD, NVIDIA and console sources for QN55S90H.
GPU Requirement4K up to 165 HzReaching the refresh ceiling in demanding games requires a high-end current GPU in the QN55S90H.
HDR & Brightness Reality
QN55S90H combines OLED pixel-level contrast with 100 % DCI-P3 and HDR10, HLG (Hybrid Log Gamma), HDR10+, HDR10+ Adaptive, HDR10+ Gaming, HDR10+ Advanced. Samsung also lists OLED HDR+ with Glare Free treatment, but gives no typical or peak brightness figure. That prevents a direct judgement of highlight headroom, even though black-level control should be excellent. Dolby Vision is absent, so dynamic HDR relies on HDR10+ rather than cross-format support.
Connectivity & Ports
HDMI4 x HDMI 2.1Four high-bandwidth inputs support the listed 165 Hz gaming modes in QN55S90H's published specification.
DisplayPortNone listedThis television expects PC and console video over HDMI on QN55S90H.
USB-CNone listedUSB-C video input and laptop charging are not supported for QN55S90H.
USB Hub3 x USB 2.0 (Type-A; downstream)QN55S90H includes 3 x usb 2.0 (type-a; downstream) for media and accessories
Audio OutHDMI eARC, optical, 3.5 mmProvides the listed routes to a soundbar, receiver or headphones as listed for QN55S90H.
Real-World Use Cases
48 Hz - 165 Hz and four HDMI 2.1 ports suit fast PCs and consoles in QN55S90H's published specification.
OLED black control and 100 % DCI-P3 support dark-room use on QN55S90H.
One UI Tizen and NQ4 AI Gen3 provide apps and upscaling for QN55S90H.
eARC and optical output connect a soundbar or AV receiver in the QN55S90H.
Pros & Cons
Pros
- 48 Hz 165 Hz with FreeSync Premium Pro, G-Sync compatibility and VRR is a high-end gaming combination in QN55S90H's published specification.
- 4 x HDMI 2.1 supports multiple current consoles and PCs on QN55S90H.
- OLED pixel-level contrast and 100 % DCI-P3 suit films and HDR games for QN55S90H.
- 40W audio is stronger than the 20W S85H systems in the QN55S90H.
- It keeps the 165 Hz gaming core of the QN48S90H on a 54.6-inch screen with 40W audio.
Cons
- Typical and peak brightness remain unpublished in QN55S90H's published specification.
- Dolby Vision is absent despite the premium OLED specification on QN55S90H.
- No USB-C video input or laptop charging is listed for QN55S90H.
- Fixed stand has no height, swivel, pivot or tilt adjustment in the QN55S90H.
Score & Ratings
9.2/10
Great
Television Identity & Market
6
| Specification | Value |
|---|---|
| Brand | Samsung |
| Series | S90H |
| Model | QN55S90H |
| Model Alias | QN55S90HAEXZA55" 4K OLED S90H Samsung Vision AI Smart TV (2026) |
| Model Year | 2026 |
| Available Colors | Graphite Black |
Screen Geometry & Format
4
| Specification | Value |
|---|---|
| Screen Size | 54.6 in (inches) |
| Marketed Screen Size | 54.6 in (inches) |
| Aspect Ratio | 16:9 |
| Screen-to-Body Ratio | 94.78 % (percent) |
Panel Architecture & Light Control
3
| Specification | Value | What It Means |
|---|---|---|
| Panel Type | OLED | OLED means pixel-level light control and strong black potential on QN55S90H. |
| Panel Bit Depth | 10 bits | 10 bits supports smoother colour gradation than a basic 8-bit-only pipeline, although source quality still matters in the QN55S90H. |
| Display Colors | 1.07 billion colors / 30-bit |
Surface Treatment & Viewing Layer
1
| Specification | Value |
|---|---|
| Screen Coating | Anti-glare/Matte |
Resolution, Scaling & Signal
4
| Specification | Value |
|---|---|
| Native Resolution | 3840 x 2160 pixels |
| Pixel Density | 80 ppi (pixels per inch) |
| Pixel Pitch | 0.315 mm (millimeters) |
| HDCP Support | Yes |
◑
Luminance, Blacks & Contrast
1
| Specification | Value |
|---|---|
| Viewing Angles | 178° / 178° |
Color Reproduction & Calibration
1
| Specification | Value | What It Means |
|---|---|---|
| DCI-P3 Coverage | 100 % (percent) | 100 % gives QN55S90H wide-colour coverage for HDR films and games. |
HDR Formats & Tone Mapping
2
| Specification | Value | What It Means |
|---|---|---|
| HDR Support | HDR10+ GamingHDR10+HDR10HLG |
HDR10, HLG (Hybrid Log Gamma), HDR10+, HDR10+ Adaptive, HDR10+ Gaming, HDR10+ Advanced provides dynamic HDR10+ compatibility, but Samsung does not list Dolby Vision within the QN55S90H specification. |
| Filmmaker Mode | Yes |
Motion Processing & Response
2
| Specification | Value |
|---|---|
| Maximum Refresh Rate | 48 Hz - 165 Hz (hertz) |
| Motion Processing | Motion Xcelerator 165 Hz |
Console, VRR & Game Tools
6
| Specification | Value | What It Means |
|---|---|---|
| Variable Refresh Rate | Variable Refresh Rate (VRR) | |
| Auto Low Latency Mode | Auto Low Latency Mode (ALLM) | |
| High Frame Rate | Yes | |
| AMD FreeSync | AMD FreeSync Premium Pro | AMD FreeSync Premium Pro helps reduce tearing when a compatible source changes frame rate in QN55S90H's published specification. |
| NVIDIA G-Sync | Yes | |
| Game Mode | Yes |
Picture Intelligence & AI
1
| Specification | Value |
|---|---|
| Filmmaker Mode | Yes |
Broadcast Tuners & Reception
5
| Specification | Value |
|---|---|
| Built-In TV Tuner | Yes |
| Tuner Configuration | Analog (NTSC/PAL/SECAM)ATSCClear QAM |
| Analog Tuner | NTSC / PAL / SECAM |
| North American Digital Tuner | ATSC |
| Clear QAM | clear qam |
Compute, Memory & Storage
2
| Specification | Value |
|---|---|
| Processor Brand Name | NQ4 AI Gen3 Processor |
| CPU Architecture | 4 |
Smart Platform & System
2
| Specification | Value | What It Means |
|---|---|---|
| Smart TV | Yes | |
| Operating System | One UI Tizen | One UI Tizen runs Samsung's app platform and connected-TV features on QN55S90H. |
HDMI Signal Interface
9
| Specification | Value |
|---|---|
| Total HDMI Ports | 4 |
| HDMI 2.1 Ports | 4× HDMI 2.1 |
| HDMI CEC | Yes |
| Audio Return Channel | Yes |
| Enhanced Audio Return Channel | Yes |
| Auto Low Latency Mode | Auto Low Latency Mode (ALLM) |
| High Frame Rate | Yes |
| Variable Refresh Rate | Variable Refresh Rate (VRR) |
| HDCP Support | Yes |
USB, Audio & Legacy I/O
6
| Specification | Value |
|---|---|
| Total USB Ports | 3 |
| USB-A 2.0 Ports | 3× USB 2.0 |
| Ethernet Port | 1× RJ45 |
| Optical Audio Output | 1× S/PDIF |
| 3.5 mm Audio Output | 1× 3.5 mm |
| Headphone Output | Yes |
Wireless, LAN & Casting
6
| Specification | Value |
|---|---|
| LAN | Yes |
| Wi-Fi | Wi-Fi 8 |
| Wi-Fi Standards | 802.11a |
| Bluetooth | Bluetooth 5.3 |
| Wi-Fi Direct | Yes |
| DLNA | Yes |
Speaker Layout & Output
7
| Specification | Value |
|---|---|
| Built-In Speakers | Yes |
| Speaker Configuration | 2.1 CH |
| Speaker Channels | 2.1 CH |
| Built-In Subwoofer | Yes |
| Subwoofer Configuration | 1 x 10 W (watts) |
| Total Audio Output | 40W |
| Total Speaker Output | 40W |
Sound Formats & Enhancement
2
| Specification | Value |
|---|---|
| Dolby Atmos | Yes |
| Q-Symphony | Yes |
Panel-Only Size & Mass
4
| Specification | Value |
|---|---|
| Width Without Stand | 1225.3 mm (millimeters) |
| Height Without Stand | 708.7 mm (millimeters) |
| Depth Without Stand | 40 mm (millimeters) |
| Weight Without Stand | 14.6 kg (kilograms) |
Assembled TV Size & Mass
4
| Specification | Value |
|---|---|
| Width With Stand | 1225.3 mm (millimeters) |
| Height With Stand | 773.7 mm (millimeters) |
| Depth With Stand | 265.2 mm (millimeters) |
| Weight With Stand | 15.9 kg (kilograms) |
Exterior Styling & Stand Footprint
1
| Specification | Value |
|---|---|
| Chassis Color | Graphite Black |
Wall Mounting & Installation
3
| Specification | Value |
|---|---|
| VESA Mount | 300 x 200 mm |
| VESA Interface | 300 x 200 mm |
| VESA Size | 300 x 200 mm |
Electrical Load & Efficiency
6
| Specification | Value |
|---|---|
| Power Input | 100 V - 120 V (volts) |
| AC Frequency | 50 Hz - 60 Hz (hertz) |
| Typical Power Consumption | 116 W (watts) |
| Average Power Consumption | 116 W (watts) |
| Maximum Power Consumption | 330 W (watts) |
| Standby Consumption | 0.5 W (watts) |
Picture Feature Inventory
2
| Specification | Value |
|---|---|
| Ultra Viewing Angle | Yes |
| Filmmaker Mode | Yes |
Gaming Validation & Compatibility
1
| Specification | Value |
|---|---|
| ALLM | Auto Low Latency Mode (ALLM) |
Regulatory & Industry Approvals
1
| Specification | Value |
|---|---|
| CE | AI Motion Enhancer Pro |
In-the-Box Components
1
| Specification | Value |
|---|---|
| Screen Size | 54.6 in (inches) |
Frequently Asked Questions
01 What performance gain does the QN55S90H have over the QN48S90H? +
It keeps the 165 Hz gaming core of the QN48S90H on a 54.6-inch screen with 40W audio. The higher-tier model also uses NQ4 AI Gen3 processing and FreeSync Premium Pro.
02 How useful is 165 Hz on the QN55S90H? +
It can improve motion and reduce latency with a sufficiently fast PC source. Reaching 4K at that rate in demanding games requires a high-end GPU.
03 What HDR evidence is missing for the QN55S90H? +
The sheet lists OLED HDR+ and HDR10+ formats but no typical or peak brightness. OLED black control is meaningful, yet highlight headroom cannot be compared numerically.
04 Which external devices fit the QN55S90H connectivity? +
Four HDMI 2.1 ports support current consoles, PCs and eARC audio. Three USB ports and optical output add accessory and sound-system options.
05 What should be planned before placing the QN55S90H? +
The television weighs 15.9 kg (kilograms) with its stand and uses 300 x 200 mm VESA. Confirm furniture dimensions or wall-bracket capacity before delivery.
Reviews
DISPLAYINPUT · INDEPENDENT · SPEC-BASED · NO SPONSORED PLACEMENT
SHEET № QN55S90H