LG B4 55" vs Samsung QN90C 65" (4K Neo QLED)
The Verdict
LG's B4 OLED delivers exceptional contrast and color accuracy at a competitive $1199 price point, featuring a responsive 1ms input lag and Dolby Vision IQ support ideal for cinephiles. Samsung's QN90C Neo QLED 65" commands a $600 premium but justifies it with superior brightness (2000 nits vs 1100), larger screen real estate, more advanced Object Tracking Sound+, and Wi-Fi 6E connectivity. Gaming performance slightly favors LG's 1ms response time, though Samsung's 6ms remains respectable. Picture quality depends on preference: OLED excels in dark rooms with perfect blacks, while Neo QLED's mini-LED backlight handles bright rooms better. For gamers and movie enthusiasts prioritizing contrast and value, the B4 is exceptional. Those wanting maximum brightness, larger screen, and premium sound should invest in the QN90C. Samsung edges out overall due to superior specs, but LG offers better value per dollar.
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 Samsung QN90C 65" (4K Neo QLED) if…
- →Excellent value for a Mini-LED flagship at $1,799
- →2000 nits peak brightness is outstanding for HDR in bright rooms
- →4x HDMI 2.1 with 4K@120Hz and VRR for next-gen gaming
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
Samsung QN90C 65" (4K Neo QLED)
Pros
- Excellent value for a Mini-LED flagship at $1,799
- 2000 nits peak brightness is outstanding for HDR in bright rooms
- 4x HDMI 2.1 with 4K@120Hz and VRR for next-gen gaming
- Slim anti-reflection screen works well in rooms with windows
- Object Tracking Sound moves audio to match on-screen action
Cons
- No Dolby Vision support
- Some blooming visible in very dark scenes with small bright highlights
- Viewing angles are narrower than OLED — best for straight-on viewing
- Tizen ads on the home screen detract from the premium experience
Full Specifications
| Spec | LG B4 55" | Samsung QN90C 65" (4K Neo QLED) |
|---|---|---|
| Body | ||
| VESA mount | 200 x 200mm | 300 x 300mm |
| Weight | 41.9 lbs | 53.0 lbs |
| Dimensions (w/ stand) | 48.4 x 32.1 x 10.5 inches | 57.0 x 35.3 x 11.4 inches |
| Dimensions | — | 57.0 x 32.7 x 1.0 inches |
| Audio | ||
| Output (watts) | 40 | 60 |
| Speakers | 2.0ch | 2.2.2ch Object Tracking Sound+ |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 1 | 6 |
| Display | ||
| HDR | Dolby Vision IQ, HDR10, HLG, Filmmaker Mode | Quantum HDR 32x, HDR10+, HLG |
| Size | 55" | 65" |
| Type | OLED | Neo QLED Mini-LED |
| Resolution | 3840 x 2160 (4K UHD) | 3840 x 2160 (4K) |
| Refresh rate | 120Hz | 120Hz (144Hz via firmware update) |
| Brightness (nits) | 1100 | 2000 |
| Smart TV | ||
| Os | webOS 24 | Tizen OS |
| Voice assistant | ThinQ AI, Alexa, Google Assistant | Bixby, Alexa, Google Assistant |
| Processor | ||
| Chipset | α8 Gen 7 AI Processor 4K | — |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 (802.11ac) | Wi-Fi 6E |
| Ethernet | ||
| Bluetooth | 5.0 | 5.2 |
| USB ports | 3 | 2 |
| HDMI ports | 4 | 4 |
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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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