Head to head

LG B4 OLED TV vs TCL QM7 Mini-LED TV

LG B4 OLED TV leads 3 to 1 on the 4 rankable specs, but TCL QM7 Mini-LED 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: LG B4 lists WOLED (LG sheet, 2026-09-02); TCL QM7 Mini-LED lists QD-Mini LED (VA panel with full array local dimming) (TCL sheet, 2026-09-02).
Peak brightness (HDR): LG B4 lists ~650–700 nits HDR peak (other published figure, not on maker sheet); TCL QM7 Mini-LED lists Up to 2,400 nits peak brightness (other published figure, not on maker sheet).
HDMI 2.1 ports: LG B4 lists 4 (LG sheet, 2026-09-02); TCL QM7 Mini-LED lists 2 (Ports 1 and 2 support 4K 144Hz; port 4 has eARC) (TCL sheet, 2026-09-02).
Native refresh rate: LG B4 lists 120 Hz (LG sheet, 2026-09-02); TCL QM7 Mini-LED lists 120 Hz (up to 144 Hz VRR) (TCL sheet, 2026-09-02).
Contrast: LG B4 lists Infinite (per-pixel) (our summary); TCL QM7 Mini-LED lists Ultra-high native contrast with localized dimming (our summary).

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

LG B4 OLED TV

$1,2993 spec wins

Swap

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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 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

TCL QM7 Mini-LED TV

$7991 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: 3 to 1

Buy the LG B4.

Leads 3 of 4 rankable overall specs; TCL QM7 Mini-LED takes 1.
HDMI 2.1 ports: 4 vs 2
Input lag (4K 120, game mode): ~5.5 ms vs ~6 ms at 120Hz / ~12 ms at 60Hz
TCL QM7 Mini-LED is $500 cheaper. Pay the difference only if hdmi 2.1 ports matters to you.

Check first: the LG B4 has burn-in risk. the LG B4 has a glossy screen, no anti-reflective coating. Tick them under deal-breakers if that rules it out.

3 LG B44 rankable of 28 specsTCL QM7 Mini-LED 1

Deal-breakers

tick what would make you walk away

Only two HDMI 2.1 portsrow
A PS5, an Xbox and a 4K120 PC cannot all connect at full bandwidth, and one port doubles as eARC.
Clear:LG B4 · 4Trips:TCL QM7 Mini-LED · 2 (Ports 1 and 2 support 4K 144Hz; port…
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…Clear:TCL QM7 Mini-LED · None (LED)
Glossy screen, no anti-reflective coatingrow
Lamps and windows reflect in a bright room.
Trips:LG B4 · GlossyClear:TCL QM7 Mini-LED · Anti-glare screen coating

At a glance

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

3 of 3 differ

Panel type≠

WOLED

TCL

QD-Mini LED (VA panel with full array local dimming)

Peak brightness (HDR)

~650–700 nits HDR peak

TCL

Up to 2,400 nits peak brightness

HDMI 2.1 ports

TCL

2 (Ports 1 and 2 support 4K 144Hz; port 4 has eARC)

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.

TCL: 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$1,2993 wins

TCL QM7 Mini-LED$7991 win

Picture Processing Gaming Audio Smart TV Design Ownership

25 of 28 attributes differ. Identical rows are dimmed.

Picture

leads 1-0

Picture specifications. Middle column is LG B4 OLED TV, right column is TCL QM7 Mini-LED TV.
Panel type	WOLED	QD-Mini LED (VA panel with full array local dimming)
Screen size	65 inches	65 inches
Resolution	3840 × 2160 (4K)	3840 × 2160 (4K)
Native refresh rate	120 Hz	120 Hz (up to 144 Hz VRR)
Peak brightness (HDR)Not on the official sheet	~650–700 nits HDR peak	Up to 2,400 nits peak brightness (wins this row: higher)
ContrastOur summary	Infinite (per-pixel)	Ultra-high native contrast with localized dimming
Local dimming	Per-pixel (self-emissive)	High-zone QD-Mini LED (up to 1,500+ zones)
Viewing angleOur summary	Excellent	Narrow to moderate (VA panel)
Screen finish	Glossy	Anti-glare screen coating
HDR formats	Dolby Vision, HDR10, HLG (no HDR10+)	Dolby Vision IQ, HDR10+, HDR10, HLG, IMAX Enhanced

Processing

3 differences

Processing specifications. Middle column is LG B4 OLED TV, right column is TCL QM7 Mini-LED TV.
Processor	α8 AI Processor 4K	AIPQ PRO Processor
Motion handlingOur summary	Excellent OLED response time	Motion Rate 480 with MEMC
Upscaling	AI Super Upscaling 4K	AIPQ Super Resolution upscaling

Gaming

leads 2-0

Gaming specifications. Middle column is LG B4 OLED TV, right column is TCL QM7 Mini-LED TV.
HDMI 2.1 ports	4 (wins this row: higher)	2 (Ports 1 and 2 support 4K 144Hz; port 4 has eARC)
4K 120Hz	Yes	Yes (up to 4K 144Hz)
VRR	Yes	Yes (AMD FreeSync Premium Pro)
Auto low latency (ALLM)	Yes	Yes
Input lag (4K 120, game mode)Not on the official sheet	~5.5 ms (wins this row: lower)	~6 ms at 120Hz / ~12 ms at 60Hz
G-Sync / FreeSync	NVIDIA G-Sync Compatible, AMD FreeSync Premium	AMD FreeSync Premium Pro

Audio

3 differences

Audio specifications. Middle column is LG B4 OLED TV, right column is TCL QM7 Mini-LED TV.
Speakers	2.0 channel, 20W	2.1 channel speaker system with built-in subwoofer, 40W
Dolby Atmos	Yes	Yes (Dolby Atmos and DTS Virtual:X)
eARC	Yes	Yes (dedicated eARC on HDMI 4)

Smart TV

2 differences

Smart TV specifications. Middle column is LG B4 OLED TV, right column is TCL QM7 Mini-LED TV.
Operating system	webOS 24	Google TV
Voice assistants	LG ThinQ, Alexa, Apple Home	Google Assistant built-in, Amazon Alexa, Apple AirPlay 2

Design

leads 1-0

Design specifications. Middle column is LG B4 OLED TV, right column is TCL QM7 Mini-LED TV.
ThicknessNot on the official sheet	~46 mm (wins this row: lower)	~68 mm
Wall mount	Standard VESA	VESA 400 × 400 mm

Ownership

2 differences

Ownership specifications. Middle column is LG B4 OLED TV, right column is TCL QM7 Mini-LED TV.
Burn-in riskOur summary	Yes (mitigated by pixel shift and screen care)	None (LED)
Warranty	1 year	1 year 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 TCL QM7 Mini-LED 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

TCL QM7 Mini-LED TV

65-inch QD-Mini LED 4K TV with up to 1,500+ local dimming zones, 2,400 nits peak brightness, and 144Hz Game Accelerator.

Outstanding brightness and local dimming for under $1,000
Up to 144Hz native refresh rate with FreeSync Premium Pro
Wide HDR support including Dolby Vision and HDR10+

What you give up

Only two HDMI 2.1 ports
Audio is basic and benefits from a soundbar

Full TCL QM7 Mini-LED TV specs →

Best for each use

Gaming

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

For gaming, buy the LG B4.

Leads 2 of 2 rankable gaming specs.
HDMI 2.1 ports: 4 vs 2
Input lag (4K 120, game mode): ~5.5 ms vs ~6 ms at 120Hz / ~12 ms at 60Hz
TCL QM7 Mini-LED is $500 cheaper. Pay the difference only if hdmi 2.1 ports matters to you.

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 Ultra-high native contrast with localized…
Panel type: WOLED vs QD-Mini LED

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 Anti-glare screen coating
Viewing angle: Excellent vs Narrow to moderate

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 TCL QM7 Mini-LED TV spec sheet

Manufacturer pages: LG B4 OLED TV ↗ · TCL QM7 Mini-LED TV ↗

Common questions

Which is cheaper, the LG B4 or the TCL QM7 Mini-LED?

TCL QM7 Mini-LED costs $500 less at list price.

What is the biggest catch with the LG B4 or TCL QM7 Mini-LED?

TCL QM7 Mini-LED has this deal-breaker: only two HDMI 2.1 ports. A PS5, an Xbox and a 4K120 PC cannot all connect at full bandwidth, and one port doubles as eARC.

Which is better for gaming, the LG B4 or the TCL QM7 Mini-LED?

For gaming, buy the LG B4. Leads 2 of 2 rankable gaming specs. HDMI 2.1 ports: 4 vs 2

What cannot be compared from spec sheets?

Of the 28 specs tracked here, 24 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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