Head to head

Samsung Q90C QLED TV vs Samsung S90D OLED TV

Samsung Q90C QLED TV leads 2 to 1 on the 3 rankable specs, but Samsung S90D OLED TV costs $200 less. Most of the 28 attributes tracked here are descriptive rather than numeric.

Catalog as of September 1, 2026

Why, in numbers

Panel type: Samsung Q90C lists Mini-LED QLED (VA) (Samsung sheet, 2026-09-02); Samsung S90D lists QD-OLED / WOLED (size dependent) (Samsung sheet, 2026-09-02).
Peak brightness (HDR): Samsung Q90C lists ~1,500–2,000 nits HDR (other published figure, not on maker sheet); Samsung S90D lists ~1,100–1,300 nits peak HDR (other published figure, not on maker sheet).
Native refresh rate: Samsung Q90C lists 120 Hz (up to 144 Hz PC) (Samsung sheet, 2026-09-02); Samsung S90D lists 120 Hz (up to 144 Hz with PC) (Samsung sheet, 2026-09-02).
Contrast: Samsung Q90C lists Very high (local-dimmed LED, not infinite) (our summary); Samsung S90D lists Infinite (per-pixel self-lit) (our summary).
Local dimming: Samsung Q90C lists Quantum Mini LED full-array (Samsung sheet, 2026-09-02); Samsung S90D lists Per-pixel self-emissive (Samsung sheet, 2026-09-02).

Manufacturer list price, not a live offer. Confirm current pricing before you buy.

Samsung Q90C QLED TV

$1,7992 spec wins

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Samsung S90D OLED TV

$1,5991 spec win

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Generational Upgrade Analysis

Generational Comparison

Samsung sibling models compared across generations.

Our recommendation: Compare the spec differences below to see if the price premium justifies the newer model's additions.

Buying for

Every rankable spec counts once. Pick a lens to score only what matters for your tv.

Straight answer

Overall: 2 to 1

Buy the Samsung Q90C.

Leads 2 of 3 rankable overall specs; Samsung S90D takes 1.
Peak brightness (HDR): ~1,500–2,000 nits HDR vs ~1,100–1,300 nits peak HDR
Thickness: ~26 mm vs ~39 mm at thickest section
Samsung S90D is $200 cheaper. Pay the difference only if peak brightness (hdr) matters to you.

2 Samsung Q90C3 rankable of 28 specsSamsung S90D 1

Deal-breakers

tick what would make you walk away

Burn-in riskrow
Static news tickers, game HUDs and desktop use can leave permanent marks over the years.
Clear:Samsung Q90C · None (LED)Trips:Samsung S90D · Yes (mitigated by Samsung OLED Care and…

At a glance

The handful of numbers that decide most purchases in this category.

2 of 3 differ

Panel type≠

Q90C

Mini-LED QLED (VA)

S90D

QD-OLED / WOLED (size dependent)

Peak brightness (HDR)

Q90C

~1,500–2,000 nits HDR

S90D

~1,100–1,300 nits peak HDR

HDMI 2.1 portssame

Q90C

S90D

Living Room Space & Placement Check

Real-world physical measurements for credenza width, soundbar clearance, and wall mounting.

Ergonomic & Spatial Check

TV Stand & Table Footprint

Check your media console width before buying wide-foot models.

Q90C

Heavy center pedestal stand (fits narrow 16"–24" media consoles)

S90D

Standard pedestal or dual-foot support

Soundbar Clearance

Low bezel clearance may cause soundbars to block screen bottom or remote sensor.

Q90C

3.0 in clearance above pedestal (fits most soundbars)

S90D

Standard clearance

Wall Mount Profile & Depth

Q90C

1.0 in NeoSlim uniform chassis depth

S90D

Standard VESA wall depth

The 90-Day Owner Regret Check

Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.

Post-Purchase Truths

Q90C: What to watch for

Software / Apps
Lack of Dolby Vision HDR format support.
Samsung refuses to license Dolby Vision, falling back to standard HDR10 on Netflix, Disney+, and Apple TV+ streams.
Hardware Quirk
Rainbow horizontal flare streaks under intense direct side lighting.
The wide viewing angle anti-reflective optical layer can stretch pinpoint lamp reflections into horizontal rainbow bands across the panel.

S90D: What to watch for

Software / Apps
Smart TV interface runs sponsored ads and banner recommendations.
Like most modern smart TV platforms, the home menu highlights suggested streaming content and sponsored banner placement out of the box.
Ergonomics
Thin integrated TV speakers lack low-end bass punch.
Ultra-thin modern chassis leave minimal acoustic chamber depth, making a dedicated soundbar or audio system virtually mandatory for movie dialogues.

Samsung Q90C$1,7992 wins

Samsung S90D$1,5991 win

Picture Processing Gaming Audio Smart TV Design Ownership

24 of 28 attributes differ. Identical rows are dimmed.

Picture

leads 1-0

Picture specifications. Middle column is Samsung Q90C QLED TV, right column is Samsung S90D OLED TV.
Panel type	Mini-LED QLED (VA)	QD-OLED / WOLED (size dependent)
Screen size	65 inches	65 inches
Resolution	3840 × 2160 (4K)	3840 × 2160 (4K)
Native refresh rate	120 Hz (up to 144 Hz PC)	120 Hz (up to 144 Hz with PC)
Peak brightness (HDR)Not on the official sheet	~1,500–2,000 nits HDR (wins this row: higher)	~1,100–1,300 nits peak HDR
ContrastOur summary	Very high (local-dimmed LED, not infinite)	Infinite (per-pixel self-lit)
Local dimming	Quantum Mini LED full-array	Per-pixel self-emissive
Viewing angleOur summary	Wide (Ultra Viewing Angle layer)	Ultra Wide viewing angles
Screen finish	Matte anti-glare	Glossy with anti-reflective filter
HDR formats	HDR10, HDR10+, HLG (no Dolby Vision)	HDR10, HDR10+ Adaptive, HDR10+ Gaming, HLG (no Dolby Vision)

Processing

3 differences

Processing specifications. Middle column is Samsung Q90C QLED TV, right column is Samsung S90D OLED TV.
Processor	Neural Quantum Processor 4K	NQ4 AI Gen2 Processor
Motion handlingOur summary	Strong; LED pixel response slower than OLED	Instantaneous OLED response time (~0.1 ms)
Upscaling	AI 4K upscaling	4K AI Upscaling

Gaming

leads 1-0

Gaming specifications. Middle column is Samsung Q90C QLED TV, right column is Samsung S90D OLED TV.
HDMI 2.1 ports	4	4
4K 120Hz	Yes	Yes (up to 4K 144Hz)
VRR	Yes (FreeSync Premium Pro)	Yes (AMD FreeSync Premium Pro, HDMI VRR)
Auto low latency (ALLM)	Yes	Yes
Input lag (4K 120, game mode)Not on the official sheet	~10 ms	~5.5 ms at 4K 120Hz / ~9.5 ms at 60Hz (wins this row: lower)
G-Sync / FreeSync	FreeSync Premium Pro	FreeSync Premium Pro, G-Sync Compatible

Audio

3 differences

Audio specifications. Middle column is Samsung Q90C QLED TV, right column is Samsung S90D OLED TV.
Speakers	Object Tracking Sound+, 60W	2.1 channel, 40W (Object Tracking Sound Lite)
Dolby Atmos	Yes (passthrough / object tracking)	Yes (with wireless Dolby Atmos support)
eARC	Yes	Yes (HDMI 3)

Smart TV

2 differences

Smart TV specifications. Middle column is Samsung Q90C QLED TV, right column is Samsung S90D OLED TV.
Operating system	Tizen	Tizen OS
Voice assistants	Bixby, Alexa, Google Assistant	Bixby, Amazon Alexa built-in

Design

leads 1-0

Design specifications. Middle column is Samsung Q90C QLED TV, right column is Samsung S90D OLED TV.
ThicknessNot on the official sheet	~26 mm (wins this row: lower)	~39 mm at thickest section (LaserSlim design)
Wall mount	Standard VESA	VESA 300 × 200 mm

Ownership

2 differences

Ownership specifications. Middle column is Samsung Q90C QLED TV, right column is Samsung S90D OLED TV.
Burn-in riskOur summary	None (LED)	Yes (mitigated by Samsung OLED Care and Pixel Shift)
Warranty	1 year	1 year manufacturer limited warranty

Most rows are from the official spec sheet. Marked rows are other published figures or our summary, not lab tests we ran.

Samsung Q90C QLED TV source Samsung S90D OLED TV source

Which one should you buy

Pick this one if

Samsung Q90C QLED TV

Premium 65-inch Mini-LED QLED TV with Quantum Matrix backlighting and Object Tracking Sound.

Excellent HDR brightness for mixed lighting
Four full-bandwidth HDMI 2.1 ports
Strong anti-glare finish for bright rooms

What you give up

No Dolby Vision
VA-style contrast still trails OLED in dark rooms

Full Samsung Q90C QLED TV specs →

Pick this one if

Samsung S90D OLED TV

65-inch 4K OLED TV with NQ4 AI Gen2 processor, 144Hz native refresh rate, and OLED HDR+.

Infinite contrast with deep true blacks
144Hz refresh rate with four HDMI 2.1 ports for PC gaming
Great value OLED compared to flagship S95D

What you give up

No Dolby Vision support (Samsung uses HDR10+)
Built-in speakers lack deep low-end bass

Full Samsung S90D OLED TV specs →

Best for each use

Gaming

Console or PC play: low input lag, 120 Hz, enough HDMI 2.1 ports for every box

Too close to call on gaming from the spec sheets. Only input lag (4k 120, game mode) is rankable here.

4K 120Hz: Yes vs Yes
VRR: Yes vs Yes

Movies

Dark-room films and HDR streaming: black levels, HDR formats, motion and upscaling

Too close to call on movies from the spec sheets. Only peak brightness (hdr) is rankable here.

Contrast: Very high vs Infinite
Panel type: Mini-LED QLED vs QD-OLED / WOLED

Bright rooms

Daytime TV and sports in a sunny room: brightness, glare handling, wide seating

Too close to call on bright rooms from the spec sheets. Only peak brightness (hdr) is rankable here.

Screen finish: Matte anti-glare vs Glossy with anti-reflective filter
Viewing angle: Wide vs Ultra Wide viewing angles

Every answer above is scored from published figures. A lens uses only the rows that matter for that use, including marked rows that are not on the official sheet. Switch lenses interactively in the panel above.

Done deciding?

Open the full standalone spec sheet for either device.

Samsung Q90C QLED TV spec sheet Samsung S90D OLED TV spec sheet

Manufacturer pages: Samsung Q90C QLED TV ↗ · Samsung S90D OLED TV ↗

Common questions

Which is cheaper, the Samsung Q90C or the Samsung S90D?

Samsung S90D costs $200 less at list price.

What is the biggest catch with the Samsung Q90C or Samsung S90D?

Samsung S90D has this deal-breaker: burn-in risk. Static news tickers, game HUDs and desktop use can leave permanent marks over the years.

Which is better for gaming, the Samsung Q90C or the Samsung S90D?

Too close to call on gaming from the spec sheets. Only input lag (4k 120, game mode) is rankable here. 4K 120Hz: Yes vs Yes VRR: Yes vs Yes

What cannot be compared from spec sheets?

Of the 28 specs tracked here, 25 are descriptive and cannot be ranked on numbers alone. Spec sheets also cannot measure subjective factors like build quality, real-world performance, or comfort.

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