LG B4 55" vs TCL QM8 65"
LG's B4 OLED delivers superior picture quality with perfect blacks, exceptional contrast, and Dolby Vision IQ mastery, ideal for cinephiles and dark-room viewing. Its 1ms input lag dominates competitive gaming, while the α8 Gen 7 processor ensures smooth upscaling. However, TCL's QM8 offers tremendous value at $200 cheaper with a larger 65" screen, brighter 5000-nits peak output better suited for bright rooms, and slightly superior audio with 2.1 channels. The QM8's Mini-LED QLED technology handles HDR10+ and delivers punchy colors, though with minor blooming tradeoffs. For gaming and dark-room performance, the B4 reigns supreme. For brightness, size, and overall value, TCL's QM8 presents the smarter choice for most households. Pick the LG if budget allows and you prioritize OLED perfection; choose TCL for practical, versatile all-around performance.
Full Specifications
| Spec | LG B4 55" | TCL QM8 65" |
|---|---|---|
| Body | ||
| VESA mount | 200 x 200mm | 400 x 300mm |
| Weight | 41.9 lbs | 68.3 lbs |
| Dimensions (w/ stand) | 48.4 x 32.1 x 10.5 inches | 56.7 x 36.6 x 12.8 inches |
| Audio | ||
| Output (watts) | 40 | 50 |
| Speakers | 2.0ch | 2.1ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 1 | 6 |
| Display | ||
| HDR | Dolby Vision IQ, HDR10, HLG, Filmmaker Mode | Dolby Vision IQ, HDR10+, HDR10, HLG |
| Size | 55" | 65" |
| Type | OLED | Mini-LED QLED |
| Resolution | 3840 x 2160 (4K UHD) | 3840 x 2160 (4K UHD) |
| Refresh rate | 120Hz | 120Hz |
| Brightness (nits) | 1100 | 5000 |
| Smart TV | ||
| Os | webOS 24 | Google TV |
| Voice assistant | ThinQ AI, Alexa, Google Assistant | Google Assistant |
| Processor | ||
| Chipset | α8 Gen 7 AI Processor 4K | AiPQ Pro Processor |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 (802.11ac) | Wi-Fi 6 (802.11ax) |
| Ethernet | ||
| Bluetooth | 5.0 | 5.0 |
| USB ports | 3 | 2 |
| HDMI ports | 4 | 4 |
Category Scores
Pros & Cons
LG B4 55"
Pros
- Lowest-cost entry into LG's OLED lineup with the same perfect blacks
- All four HDMI ports with VRR and ALLM at 4K@120Hz for gaming
- Dolby Vision and Dolby Atmos at an entry OLED price
- webOS 24 is one of the best smart TV interfaces available
Cons
- Only two HDMI 2.1 ports — the other two are HDMI 2.0 (limited to 4K@60Hz)
- α8 processor is noticeably weaker than the C4's α9 for upscaling and processing
- Lower peak brightness than the C4 or G4 — HDR highlights lack some punch
- No Wi-Fi 6, which limits wireless bandwidth in crowded network environments
- OLED burn-in risk remains a concern for heavy static-content users
TCL QM8 65"
Pros
- Exceptional value — up to 5,000 nits peak brightness for under $1,000
- One of the brightest consumer TVs available regardless of price bracket
- All four HDMI 2.1 ports with VRR and ALLM for 4K@120Hz gaming
- Google TV provides a smooth, well-supported smart TV experience
- Dolby Vision IQ and HDR10+ covered for the full HDR ecosystem
Cons
- Aggressive brightness can look oversaturated out of the box — calibration recommended
- Mini-LED blooming is more visible than on premium Samsung or Sony panels
- Build quality and remote feel cheaper than Samsung or Sony equivalents
- Fan noise under extreme brightness conditions reported by some users
Related Comparisons
Explore more in tvs, see all LG products or all TCL products. View full details for the LG B4 55" or the TCL QM8 65".