LG B4 55" vs Samsung CU8000 55"
The Verdict
LG's B4 represents a premium OLED experience with exceptional contrast, deep blacks, and 1100 nits peak brightness enabling vibrant HDR performance across Dolby Vision IQ, HDR10, and HLG formats. Its α8 Gen 7 processor delivers superior upscaling, while 120Hz refresh rate, 1ms input lag, and VRR/ALLM gaming features cater to competitive gamers. Audio reaches 40W across 2.0 channels with Dolby Atmos support. Samsung's CU8000 employs Crystal UHD LED technology at a fraction of the price,300 nits brightness, 60Hz refresh, and 12ms input lag suit casual viewing but lack gaming optimization. The CU8000 omits Dolby Atmos and offers minimal connectivity (1 USB port). For movie enthusiasts, console gamers, and those prioritizing image quality, LG B4's OLED excellence justifies its premium. Budget-conscious viewers seeking basic 4K content will find the CU8000 serviceable, though compromises in brightness, color depth, and gaming responsiveness are evident. LG B4 wins decisively.
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 CU8000 55" if…
- →Very affordable entry into Samsung's 4K smart TV lineup
- →HDR10+ support improves contrast in compatible content
- →Tizen OS is a mature, full-featured smart TV platform
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 CU8000 55"
Pros
- Very affordable entry into Samsung's 4K smart TV lineup
- HDR10+ support improves contrast in compatible content
- Tizen OS is a mature, full-featured smart TV platform
- Lightweight and easy to wall-mount at 27 lbs
- Crystal Processor 4K provides decent upscaling from 1080p
Cons
- 60Hz panel — no 120Hz for smooth gaming or sports
- Low peak brightness limits HDR impact
- No VRR or HDMI 2.1 — poor for next-gen consoles
- 20W speakers sound thin — a soundbar is essential
Full Specifications
| Spec | LG B4 55" | Samsung CU8000 55" |
|---|---|---|
| Body | ||
| VESA mount | 200 x 200mm | 200 x 200mm |
| Weight | 41.9 lbs | 27.1 lbs |
| Dimensions (w/ stand) | 48.4 x 32.1 x 10.5 inches | 48.8 x 30.8 x 8.8 inches |
| Audio | ||
| Output (watts) | 40 | 20 |
| Speakers | 2.0ch | 2.0ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 1 | 12 |
| Display | ||
| HDR | Dolby Vision IQ, HDR10, HLG, Filmmaker Mode | HDR10+, HLG |
| Size | 55" | 55" |
| Type | OLED | Crystal UHD LED |
| Resolution | 3840 x 2160 (4K UHD) | 3840 x 2160 (4K UHD) |
| Refresh rate | 120Hz | 60Hz |
| Brightness (nits) | 1100 | 300 |
| Smart TV | ||
| Os | webOS 24 | Tizen OS |
| Voice assistant | ThinQ AI, Alexa, Google Assistant | Bixby, Alexa |
| Processor | ||
| Chipset | α8 Gen 7 AI Processor 4K | Crystal Processor 4K |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 (802.11ac) | Wi-Fi 5 (802.11ac) |
| Ethernet | ||
| Bluetooth | 5.0 | 5.2 |
| USB ports | 3 | 1 |
| HDMI ports | 4 | 3 |
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.
Explore more in tvs, see all LG products or all Samsung products. View full details for the LG B4 55" or the Samsung CU8000 55".