LG B4 55" vs LG C4 65"
The Verdict
Both LG OLED TVs deliver exceptional picture quality with 4K resolution, 120Hz refresh rates, and identical gaming performance specs (1ms input lag, VRR, ALLM). Picture quality separates these models meaningfully: the C4 features OLED evo technology with 1300 nits brightness versus the B4's standard OLED at 1100 nits, making the C4 noticeably superior for bright rooms and HDR content. The C4's α9 Gen 7 processor outpaces the B4's α8 Gen 7, and Wi-Fi 6 connectivity provides future-proofing. Audio capabilities favor the C4 with 60W and 2.2ch versus 40W 2.0ch. At 65 inches, the C4 offers significantly more screen real estate than the 55-inch B4. However, the $600 premium demands careful consideration of your room size and brightness environment. For most buyers seeking superior performance and larger display, the C4 justifies its cost. Budget-conscious viewers in smaller spaces would find the B4 compelling.
Who Should Buy
Buy the LG B4 55" if…
- →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
Buy the LG C4 65" if…
- →Perfect black levels from self-emissive OLED pixels — best-in-class contrast
- →All four HDMI 2.1 ports at full bandwidth with VRR, ALLM, and G-Sync Compatible
- →1ms input lag makes it one of the best gaming TVs at any price
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
LG C4 65"
Pros
- Perfect black levels from self-emissive OLED pixels — best-in-class contrast
- All four HDMI 2.1 ports at full bandwidth with VRR, ALLM, and G-Sync Compatible
- 1ms input lag makes it one of the best gaming TVs at any price
- Dolby Vision IQ and Dolby Atmos support for premium cinematic experience
- webOS 24 is clean, fast, and nearly ad-free compared to Tizen
Cons
- OLED burn-in risk with prolonged static content (e.g. news tickers, HUDs)
- Peak brightness trails Mini-LED rivals in very bright HDR highlights
- Slightly lower brightness than the G4, limiting HDR pop in sunlit rooms
- USB-A ports are only USB 2.0 speed
Full Specifications
| Spec | LG B4 55" | LG C4 65" |
|---|---|---|
| Body | ||
| VESA mount | 200 x 200mm | 300 x 200mm |
| Weight | 41.9 lbs | 52.9 lbs |
| Dimensions (w/ stand) | 48.4 x 32.1 x 10.5 inches | 57.0 x 36.9 x 10.1 inches |
| Audio | ||
| Output (watts) | 40 | 60 |
| Speakers | 2.0ch | 2.2ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 1 | 1 |
| Display | ||
| HDR | Dolby Vision IQ, HDR10, HLG, Filmmaker Mode | Dolby Vision IQ, HDR10, HLG, Filmmaker Mode |
| Size | 55" | 65" |
| Type | OLED | OLED evo |
| Resolution | 3840 x 2160 (4K UHD) | 3840 x 2160 (4K UHD) |
| Refresh rate | 120Hz | 120Hz |
| Brightness (nits) | 1100 | 1300 |
| Smart TV | ||
| Os | webOS 24 | webOS 24 |
| Voice assistant | ThinQ AI, Alexa, Google Assistant | ThinQ AI, Alexa, Google Assistant |
| Processor | ||
| Chipset | α8 Gen 7 AI Processor 4K | α9 Gen 7 AI Processor 4K |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 (802.11ac) | Wi-Fi 6 (802.11ax) |
| Ethernet | ||
| Bluetooth | 5.0 | 5.0 |
| USB ports | 3 | 3 |
| HDMI ports | 4 | 4 |
Related Comparisons
This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
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