Head to head
TCL QM8 Mini-LED TV vs LG B4 OLED TV
They split the 4 rankable specs evenly, so cost decides it: LG B4 OLED TV costs $200 less.
Catalog as of September 1, 2026
Why, in numbers
Swap
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Compare a different tv
TCL QM7 Mini-LED TV$799Hisense U7N Mini-LED TV$799Hisense U8N Mini-LED TV$1,299Samsung S90D OLED TV$1,599Samsung Q90C QLED TV$1,799LG C4 OLED evo TV$1,799Sony BRAVIA 7 Mini-LED TV$1,799Samsung QN90D Neo QLED TV$1,899Sony BRAVIA 8 OLED TV$1,999LG G3 OLED evo TV$2,199Samsung S95D QD-OLED TV$2,599LG G4 OLED evo TV$2,599Sony BRAVIA 9 Mini-LED TV$3,299Sony A95L OLED TV$3,499Buying for
Straight answer
Overall: 2 to 2
Tied overall. LG B4 is cheaper.
- The 4 rankable overall specs split 2 to 2.
- Saves $200 at list price.
At a glance
The handful of numbers that decide most purchases in this category.
Panel type≠
TCL
Mini-LED QLED (VA HVA)
LG
WOLED
Peak brightness (HDR)
TCL
~3,500–5,000 nits HDR
LG
~650–700 nits HDR peak
HDMI 2.1 ports
TCL
2 (of 4 HDMI total)
LG
4
The 90-Day Owner Regret Check
Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.
TCL: What to watch for
- Software / Apps
Smart TV interface runs sponsored ads and banner recommendations.
- Ergonomics
Thin integrated TV speakers lack low-end bass punch.
LG: What to watch for
- Software / Apps
Smart TV interface runs sponsored ads and banner recommendations.
- Ergonomics
Thin integrated TV speakers lack low-end bass punch.
Picture
leads 1-0| Panel type | Mini-LED QLED (VA HVA) | WOLED |
|---|---|---|
| Screen size | 65 inches | 65 inches |
| Resolution | 3840 × 2160 (4K) | 3840 × 2160 (4K) |
| Native refresh rate | 120 Hz (up to 144 Hz PC / 240 Hz DLG) | 120 Hz |
| Peak brightness (HDR)Not on the official sheet | ~3,500–5,000 nits HDR (wins this row: higher) | ~650–700 nits HDR peak |
| ContrastOur summary | Extreme local contrast | Infinite (per-pixel) |
| Local dimming | QD-Mini LED (5,000+ zones) | Per-pixel (self-emissive) |
| Viewing angleOur summary | Moderate | Excellent |
| Screen finish | Anti-glare low reflection | Glossy |
| HDR formats | Dolby Vision IQ, HDR10+, HDR10, HLG | Dolby Vision, HDR10, HLG (no HDR10+) |
Processing
3 differences| Processor | AIPQ Pro Processor | α8 AI Processor 4K |
|---|---|---|
| Motion handlingOur summary | Motion Rate 480 with MEMC | Excellent OLED response time |
| Upscaling | AI 4K Clarity Upscaling | AI Super Upscaling 4K |
Gaming
leads 2-0| HDMI 2.1 ports | 2 (of 4 HDMI total) | 4 (wins this row: higher) |
|---|---|---|
| 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 | ~6 ms | ~5.5 ms (wins this row: lower) |
| G-Sync / FreeSync | FreeSync Premium Pro | NVIDIA G-Sync Compatible, AMD FreeSync Premium |
Audio
1 differences| Speakers | 2.1.2 ch Onkyo soundbar built-in, 60W | 2.0 channel, 20W |
|---|---|---|
| Dolby Atmos | Yes | Yes |
| eARC | Yes | Yes |
Smart TV
2 differences| Operating system | Google TV | webOS 24 |
|---|---|---|
| Voice assistants | Google Assistant, Alexa | LG ThinQ, Alexa, Apple Home |
Design
leads 1-0| ThicknessNot on the official sheet | ~44 mm (wins this row: lower) | ~46 mm |
|---|---|---|
| Wall mount | VESA 400x400 | Standard VESA |
Ownership
1 differences| Burn-in riskOur summary | None (LED) | Yes (mitigated by pixel shift and screen care) |
|---|---|---|
| Warranty | 1 year | 1 year |
Which one should you buy
Pick this one if
TCL QM8 Mini-LED TV
High-value 65-inch powerhouse with up to 5,000 nits peak brightness and 5,000+ local dimming zones.
- Unmatched brightness-to-price ratio
- Deep black levels with massive zone count
- Built-in Onkyo 2.1 sound system with subwoofer
What you give up
- Narrower viewing angle than OLED
- Image processing slightly behind Sony
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
Best for each use
Gaming
For gaming, buy the LG B4.
Movies
Too close to call on movies from the spec sheets. Only peak brightness (hdr) is rankable here.
Bright rooms
Too close to call on bright rooms from the spec sheets. Only peak brightness (hdr) is rankable here.
Done deciding?
Open the full standalone spec sheet for either device.
Manufacturer pages: TCL QM8 Mini-LED TV ↗ · LG B4 OLED TV ↗
Common questions
Which is cheaper, the TCL QM8 Mini-LED or the LG B4?
LG B4 costs $200 less at list price.
What is the biggest catch with the TCL QM8 Mini-LED or LG B4?
TCL QM8 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 TCL QM8 Mini-LED or the LG B4?
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.