LG OLED A2 55" vs Samsung S90C 55" (4K OLED)
The Verdict
LG's A2 delivers exceptional OLED picture quality at an accessible price point, featuring a 55-inch WOLED panel with Dolby Vision support and 500 nits brightness. Samsung's S90C commands premium pricing but justifies it with superior QD-OLED technology reaching 1300 nits brightness, 120Hz refresh rate with VRR for gaming, dramatically lower 6ms input lag versus LG's 14ms, and considerably more powerful audio at 40W versus 20W. Both offer webOS/Tizen interfaces with voice assistants and solid connectivity. For cinephile viewing and console gaming, Samsung's spec advantage is substantial,the 120Hz panel, superior color volume, and gaming responsiveness make it the stronger performer. However, the LG A2 represents remarkable value for everyday viewing, streaming content, and casual gaming. Budget-conscious buyers should choose the A2; those prioritizing ultimate gaming and bright-room performance will appreciate the S90C's capabilities.
Who Should Buy
Buy the LG OLED A2 55" if…
- →Budget OLED — perfect blacks and infinite contrast at $899
- →Dolby Vision and Dolby Atmos for immersive movie watching
- →Wide viewing angles inherent to OLED technology
Buy the Samsung S90C 55" (4K OLED) if…
- →QD-OLED at $1,599 is the most affordable OLED with quantum dot color
- →Infinite contrast ratio with perfect black levels
- →144Hz with VRR — excellent for PS5 and Xbox Series X gaming
Category Scores
Pros & Cons
LG OLED A2 55"
Pros
- Budget OLED — perfect blacks and infinite contrast at $899
- Dolby Vision and Dolby Atmos for immersive movie watching
- Wide viewing angles inherent to OLED technology
- Thin and lightweight for easy wall mounting
- Self-lit pixels produce gorgeous picture quality for the price
Cons
- 60Hz panel — no 120Hz, VRR, or HDMI 2.1 for gaming
- Only 500 nits peak brightness — dim in well-lit rooms
- 20W speakers require a soundbar for decent audio
- Only 3 HDMI ports, all HDMI 2.0
- Older α7 Gen5 processor with basic upscaling
Samsung S90C 55" (4K OLED)
Pros
- QD-OLED at $1,599 is the most affordable OLED with quantum dot color
- Infinite contrast ratio with perfect black levels
- 144Hz with VRR — excellent for PS5 and Xbox Series X gaming
- Vivid, wide color gamut coverage exceeds traditional WOLED
- Ultra-slim panel at 0.4 inches looks stunning mounted
Cons
- 55-inch S90C uses a different (WOLED) panel in some regions — verify before buying
- No Dolby Vision support
- 40W audio is weaker than the S95C — soundbar recommended
- Wi-Fi 5 only on the 55-inch model
Full Specifications
| Spec | LG OLED A2 55" | Samsung S90C 55" (4K OLED) |
|---|---|---|
| Body | ||
| VESA mount | 300 x 200mm | 300 x 300mm |
| Weight | 29.1 lbs | 33.5 lbs |
| Dimensions | 48.4 x 28.0 x 1.8 inches | 48.2 x 27.7 x 0.4 inches |
| Dimensions (w/ stand) | 48.4 x 30.0 x 9.4 inches | 48.2 x 30.2 x 9.3 inches |
| Audio | ||
| Output (watts) | 20 | 40 |
| Speakers | 2.0ch | 2.1ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 14 | 6 |
| Display | ||
| HDR | Dolby Vision, HDR10, HLG | Quantum HDR OLED, HDR10+, HLG |
| Size | 55" | 55" |
| Type | OLED (WOLED) | QD-OLED |
| Resolution | 3840 x 2160 (4K) | 3840 x 2160 (4K) |
| Refresh rate | 60Hz | 120Hz (144Hz via Game Mode) |
| Brightness (nits) | 500 | 1300 |
| Smart TV | ||
| Os | webOS 22 | Tizen OS |
| Voice assistant | LG ThinQ AI, Alexa, Google Assistant | Bixby, Alexa, Google Assistant |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 | Wi-Fi 5 |
| Ethernet | ||
| Bluetooth | 5.0 | 5.2 |
| USB ports | 2 | 2 |
| HDMI ports | 3 | 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.
Explore more in tvs, see all LG products or all Samsung products. View full details for the LG OLED A2 55" or the Samsung S90C 55" (4K OLED).