Head to head

Samsung Q90C QLED TV vs LG B4 OLED TV

Samsung Q90C QLED TV leads 2 to 1 on the 3 rankable specs, but LG B4 OLED TV costs $500 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); LG B4 lists WOLED (LG sheet, 2026-09-02).
Peak brightness (HDR): Samsung Q90C lists ~1,500–2,000 nits HDR (other published figure, not on maker sheet); LG B4 lists ~650–700 nits HDR peak (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); LG B4 lists 120 Hz (LG sheet, 2026-09-02).
Contrast: Samsung Q90C lists Very high (local-dimmed LED, not infinite) (our summary); LG B4 lists Infinite (per-pixel) (our summary).
Local dimming: Samsung Q90C lists Quantum Mini LED full-array (Samsung sheet, 2026-09-02); LG B4 lists Per-pixel (self-emissive) (LG 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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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 S90D OLED TV$1,599 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

LG B4 OLED TV

$1,2991 spec win

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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: 2 to 1

Buy the Samsung Q90C.

Leads 2 of 3 rankable overall specs; LG B4 takes 1.
Peak brightness (HDR): ~1,500–2,000 nits HDR vs ~650–700 nits HDR peak
Thickness: ~26 mm vs ~46 mm
LG B4 is $500 cheaper. Pay the difference only if peak brightness (hdr) matters to you.

2 Samsung Q90C3 rankable of 28 specsLG B4 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:LG B4 · Yes (mitigated by pixel shift and scree…
Glossy screen, no anti-reflective coatingrow
Lamps and windows reflect in a bright room.
Clear:Samsung Q90C · Matte anti-glareTrips:LG B4 · Glossy

At a glance

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

2 of 3 differ

Panel type≠

Samsung

Mini-LED QLED (VA)

WOLED

Peak brightness (HDR)

Samsung

~1,500–2,000 nits HDR

~650–700 nits HDR peak

HDMI 2.1 portssame

Samsung

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.

Samsung

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

Standard pedestal or dual-foot support

Soundbar Clearance

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

Samsung

3.0 in clearance above pedestal (fits most soundbars)

Standard clearance

Wall Mount Profile & Depth

Samsung

1.0 in NeoSlim uniform chassis depth

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

Samsung: 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.

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 Q90C$1,7992 wins

LG B4$1,2991 win

Picture Processing Gaming Audio Smart TV Design Ownership

20 of 28 attributes differ. Identical rows are dimmed.

Picture

leads 1-0

Picture specifications. Middle column is Samsung Q90C QLED TV, right column is LG B4 OLED TV.
Panel type	Mini-LED QLED (VA)	WOLED
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
Peak brightness (HDR)Not on the official sheet	~1,500–2,000 nits HDR (wins this row: higher)	~650–700 nits HDR peak
ContrastOur summary	Very high (local-dimmed LED, not infinite)	Infinite (per-pixel)
Local dimming	Quantum Mini LED full-array	Per-pixel (self-emissive)
Viewing angleOur summary	Wide (Ultra Viewing Angle layer)	Excellent
Screen finish	Matte anti-glare	Glossy
HDR formats	HDR10, HDR10+, HLG (no Dolby Vision)	Dolby Vision, HDR10, HLG (no HDR10+)

Processing

3 differences

Processing specifications. Middle column is Samsung Q90C QLED TV, right column is LG B4 OLED TV.
Processor	Neural Quantum Processor 4K	α8 AI Processor 4K
Motion handlingOur summary	Strong; LED pixel response slower than OLED	Excellent OLED response time
Upscaling	AI 4K upscaling	AI Super Upscaling 4K

Gaming

leads 1-0

Gaming specifications. Middle column is Samsung Q90C QLED TV, right column is LG B4 OLED TV.
HDMI 2.1 ports	4	4
4K 120Hz	Yes	Yes
VRR	Yes (FreeSync Premium Pro)	Yes
Auto low latency (ALLM)	Yes	Yes
Input lag (4K 120, game mode)Not on the official sheet	~10 ms	~5.5 ms (wins this row: lower)
G-Sync / FreeSync	FreeSync Premium Pro	NVIDIA G-Sync Compatible, AMD FreeSync Premium

Audio

2 differences

Audio specifications. Middle column is Samsung Q90C QLED TV, right column is LG B4 OLED TV.
Speakers	Object Tracking Sound+, 60W	2.0 channel, 20W
Dolby Atmos	Yes (passthrough / object tracking)	Yes
eARC	Yes	Yes

Smart TV

2 differences

Smart TV specifications. Middle column is Samsung Q90C QLED TV, right column is LG B4 OLED TV.
Operating system	Tizen	webOS 24
Voice assistants	Bixby, Alexa, Google Assistant	LG ThinQ, Alexa, Apple Home

Design

leads 1-0

Design specifications. Middle column is Samsung Q90C QLED TV, right column is LG B4 OLED TV.
ThicknessNot on the official sheet	~26 mm (wins this row: lower)	~46 mm
Wall mount	Standard VESA	Standard VESA

Ownership

1 differences

Ownership specifications. Middle column is Samsung Q90C QLED TV, right column is LG B4 OLED TV.
Burn-in riskOur summary	None (LED)	Yes (mitigated by pixel shift and screen care)
Warranty	1 year	1 year

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 LG B4 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

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 →

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.

VRR: Yes vs Yes
G-Sync / FreeSync: FreeSync Premium Pro vs NVIDIA G-Sync Compatible, AMD FreeSync Premium

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 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
Viewing angle: Wide vs Excellent

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 LG B4 OLED TV spec sheet

Manufacturer pages: Samsung Q90C QLED TV ↗ · LG B4 OLED TV ↗

Common questions

Which is cheaper, the Samsung Q90C or the LG B4?

LG B4 costs $500 less at list price.

What is the biggest catch with the Samsung Q90C or LG B4?

LG B4 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 LG B4?

Too close to call on gaming from the spec sheets. Only input lag (4k 120, game mode) is rankable here. VRR: Yes vs Yes G-Sync / FreeSync: FreeSync Premium Pro vs NVIDIA G-Sync Compatible, AMD FreeSync Premium

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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