Hisense U7K 55" (Mini-LED ULED) vs Samsung S90C 55" (4K OLED)
The Verdict
Both TVs deliver excellent 4K gaming and streaming performance, but they target different budgets with distinct strengths. The Hisense U7K uses Mini-LED backlighting to achieve 1500 nits peak brightness and supports 144Hz refresh rates natively, making it exceptional value at $649. Its 30W 2.0ch audio and 7ms input lag handle gaming well, though motion handling in Mini-LED introduces some blooming behind bright objects. The Samsung S90C ($1599) steps up to QD-OLED technology, delivering perfect blacks, infinite contrast, and superior motion handling with its 6ms input lag and thinner bezel-to-bezel design (0.4 inches vs 2.8 inches). Samsung's 40W 2.1ch speaker system and Wi-Fi 5 slightly undercut the Hisense on connectivity specs, but the OLED panel's superior picture quality and gaming responsiveness justify the premium for videophiles. At $950 more, the S90C excels in dark room viewing and competitive gaming, while the U7K provides remarkable brightness and 144Hz support for half the price. Choose the Hisense if budget matters and you value brightness and native 144Hz support. Choose Samsung for superior contrast, motion clarity, and long-term OLED excellence.
Who Should Buy
Buy the Hisense U7K 55" (Mini-LED ULED) if…
- →Mini-LED at $649 with 1500 nits brightness is incredible value
- →144Hz with VRR makes it one of the cheapest premium gaming TVs
- →Full HDR format support — Dolby Vision, HDR10+, and HLG
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
Hisense U7K 55" (Mini-LED ULED)
Pros
- Mini-LED at $649 with 1500 nits brightness is incredible value
- 144Hz with VRR makes it one of the cheapest premium gaming TVs
- Full HDR format support — Dolby Vision, HDR10+, and HLG
- Google TV with Chromecast built-in for easy streaming
- Dolby Atmos support for improved audio immersion
Cons
- Fewer dimming zones than U8K — more blooming visible
- 30W speakers are adequate but not impressive
- Hisense smart TV experience has occasional software bugs
- Build quality and design are functional but not premium
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 | Hisense U7K 55" (Mini-LED ULED) | Samsung S90C 55" (4K OLED) |
|---|---|---|
| Body | ||
| VESA mount | 200 x 200mm | 300 x 300mm |
| Weight | 31.7 lbs | 33.5 lbs |
| Dimensions | 48.4 x 28.1 x 2.8 inches | 48.2 x 27.7 x 0.4 inches |
| Dimensions (w/ stand) | 48.4 x 30.2 x 9.3 inches | 48.2 x 30.2 x 9.3 inches |
| Audio | ||
| Output (watts) | 30 | 40 |
| Speakers | 2.0ch | 2.1ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 7 | 6 |
| Display | ||
| HDR | Dolby Vision, HDR10+, HDR10, HLG | Quantum HDR OLED, HDR10+, HLG |
| Size | 55" | 55" |
| Type | Mini-LED QLED (VA LCD) | QD-OLED |
| Resolution | 3840 x 2160 (4K) | 3840 x 2160 (4K) |
| Refresh rate | 144Hz | 120Hz (144Hz via Game Mode) |
| Brightness (nits) | 1500 | 1300 |
| Smart TV | ||
| Os | Google TV | Tizen OS |
| Voice assistant | Google Assistant, Alexa | Bixby, Alexa, Google Assistant |
| Connectivity | ||
| Wi-Fi | Wi-Fi 6 | Wi-Fi 5 |
| Ethernet | ||
| Bluetooth | 5.1 | 5.2 |
| USB ports | 2 | 2 |
| HDMI ports | 4 | 4 |
Want to compare a third product?
Add another product for a 3-way comparison.
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 Hisense products or all Samsung products. View full details for the Hisense U7K 55" (Mini-LED ULED) or the Samsung S90C 55" (4K OLED).