Head to head

LG B4 OLED TV vs Samsung S90D OLED TV

Samsung S90D OLED TV leads 2 to 0 on the 2 rankable specs, but LG B4 OLED TV costs $300 less. Most of the 28 attributes tracked here are descriptive rather than numeric.

Catalog as of September 1, 2026

Why, in numbers

Panel type: LG B4 lists WOLED (LG sheet, 2026-09-02); Samsung S90D lists QD-OLED / WOLED (size dependent) (Samsung sheet, 2026-09-02).
Peak brightness (HDR): LG B4 lists ~650–700 nits HDR peak (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: LG B4 lists 120 Hz (LG sheet, 2026-09-02); Samsung S90D lists 120 Hz (up to 144 Hz with PC) (Samsung sheet, 2026-09-02).
Contrast: LG B4 lists Infinite (per-pixel) (our summary); Samsung S90D lists Infinite (per-pixel self-lit) (our summary).
Local dimming: LG B4 lists Per-pixel (self-emissive) (LG 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.

LG B4 OLED TV

$1,2990 spec wins

Swap

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TCL QM7 Mini-LED TV$799 Hisense U7N Mini-LED TV$799 Hisense U8N Mini-LED TV$1,299 TCL QM8 Mini-LED TV$1,499 Samsung Q90C QLED TV$1,799 LG C4 OLED evo TV$1,799 Sony BRAVIA 7 Mini-LED TV$1,799 Samsung QN90D Neo QLED TV$1,899 Sony BRAVIA 8 OLED TV$1,999 LG G3 OLED evo TV$2,199 Samsung S95D QD-OLED TV$2,599 LG G4 OLED evo TV$2,599 Sony BRAVIA 9 Mini-LED TV$3,299 Sony A95L OLED TV$3,499

Samsung S90D OLED TV

$1,5992 spec wins

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Buying for

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

Straight answer

Overall: 0 to 2

Buy the Samsung S90D.

Leads 2 of 2 rankable overall specs.
Peak brightness (HDR): ~1,100–1,300 nits peak HDR vs ~650–700 nits HDR peak
Thickness: ~39 mm at thickest section vs ~46 mm
LG B4 is $300 cheaper. Pay the difference only if peak brightness (hdr) matters to you.

0 LG B42 rankable of 28 specsSamsung S90D 2

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.
Trips:LG B4 · Yes (mitigated by pixel shift and scree…Trips:Samsung S90D · Yes (mitigated by Samsung OLED Care and…
Glossy screen, no anti-reflective coatingrow
Lamps and windows reflect in a bright room.
Trips:LG B4 · GlossyClear:Samsung S90D · Glossy with anti-reflective filter

At a glance

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

2 of 3 differ

Panel type≠

WOLED

Samsung

QD-OLED / WOLED (size dependent)

Peak brightness (HDR)

~650–700 nits HDR peak

Samsung

~1,100–1,300 nits peak HDR

HDMI 2.1 portssame

Samsung

The 90-Day Owner Regret Check

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

Post-Purchase Truths

LG: 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: 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.

LG B4$1,2990 wins

Samsung S90D$1,5992 wins

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 LG B4 OLED TV, right column is Samsung S90D OLED TV.
Panel type	WOLED	QD-OLED / WOLED (size dependent)
Screen size	65 inches	65 inches
Resolution	3840 × 2160 (4K)	3840 × 2160 (4K)
Native refresh rate	120 Hz	120 Hz (up to 144 Hz with PC)
Peak brightness (HDR)Not on the official sheet	~650–700 nits HDR peak	~1,100–1,300 nits peak HDR (wins this row: higher)
ContrastOur summary	Infinite (per-pixel)	Infinite (per-pixel self-lit)
Local dimming	Per-pixel (self-emissive)	Per-pixel self-emissive
Viewing angleOur summary	Excellent	Ultra Wide viewing angles
Screen finish	Glossy	Glossy with anti-reflective filter
HDR formats	Dolby Vision, HDR10, HLG (no HDR10+)	HDR10, HDR10+ Adaptive, HDR10+ Gaming, HLG (no Dolby Vision)

Processing

3 differences

Processing specifications. Middle column is LG B4 OLED TV, right column is Samsung S90D OLED TV.
Processor	α8 AI Processor 4K	NQ4 AI Gen2 Processor
Motion handlingOur summary	Excellent OLED response time	Instantaneous OLED response time (~0.1 ms)
Upscaling	AI Super Upscaling 4K	4K AI Upscaling

Gaming

4 differences

Gaming specifications. Middle column is LG B4 OLED TV, right column is Samsung S90D OLED TV.
HDMI 2.1 ports	4	4
4K 120Hz	Yes	Yes (up to 4K 144Hz)
VRR	Yes	Yes (AMD FreeSync Premium Pro, HDMI VRR)
Auto low latency (ALLM)	Yes	Yes
Input lag (4K 120, game mode)Not on the official sheet	~5.5 ms	~5.5 ms at 4K 120Hz / ~9.5 ms at 60Hz
G-Sync / FreeSync	NVIDIA G-Sync Compatible, AMD FreeSync Premium	FreeSync Premium Pro, G-Sync Compatible

Audio

3 differences

Audio specifications. Middle column is LG B4 OLED TV, right column is Samsung S90D OLED TV.
Speakers	2.0 channel, 20W	2.1 channel, 40W (Object Tracking Sound Lite)
Dolby Atmos	Yes	Yes (with wireless Dolby Atmos support)
eARC	Yes	Yes (HDMI 3)

Smart TV

2 differences

Smart TV specifications. Middle column is LG B4 OLED TV, right column is Samsung S90D OLED TV.
Operating system	webOS 24	Tizen OS
Voice assistants	LG ThinQ, Alexa, Apple Home	Bixby, Amazon Alexa built-in

Design

leads 1-0

Design specifications. Middle column is LG B4 OLED TV, right column is Samsung S90D OLED TV.
ThicknessNot on the official sheet	~46 mm	~39 mm at thickest section (LaserSlim design) (wins this row: lower)
Wall mount	Standard VESA	VESA 300 × 200 mm

Ownership

2 differences

Ownership specifications. Middle column is LG B4 OLED TV, right column is Samsung S90D OLED TV.
Burn-in riskOur summary	Yes (mitigated by pixel shift and screen care)	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.

LG B4 OLED TV source Samsung S90D OLED TV source

Which one should you buy

Pick this one if

LG B4 OLED TV

Value flagship 65-inch OLED TV featuring 4 full-bandwidth HDMI 2.1 ports, α8 AI processor, and Dolby Vision.

Four full-bandwidth HDMI 2.1 ports at an accessible OLED price point
Perfect blacks and infinite contrast with zero blooming
Ultra-low input lag and full VRR support for gaming

What you give up

Lower peak brightness than C4 and G4 series
Glossy screen reflects ambient light in bright rooms

Full LG B4 OLED 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.

Input lag (4K 120, game mode): ~5.5 ms vs ~5.5 ms at 4K 120Hz / ~9.5 ms at 60Hz
4K 120Hz: 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: Infinite vs Infinite
Panel type: WOLED 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: Glossy vs Glossy with anti-reflective filter
Viewing angle: Excellent 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.

LG B4 OLED TV spec sheet Samsung S90D OLED TV spec sheet

Manufacturer pages: LG B4 OLED TV ↗ · Samsung S90D OLED TV ↗

Common questions

Which is cheaper, the LG B4 or the Samsung S90D?

LG B4 costs $300 less at list price.

What is the biggest catch with the LG B4 or Samsung S90D?

Both 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 LG B4 or the Samsung S90D?

Too close to call on gaming from the spec sheets. Input lag (4K 120, game mode): ~5.5 ms vs ~5.5 ms at 4K 120Hz / ~9.5 ms at 60Hz 4K 120Hz: Yes vs Yes

What cannot be compared from spec sheets?

Of the 28 specs tracked here, 26 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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