Samsung S90C 65" (4K OLED) vs Sony X90K 65" (Full Array LED)
The Verdict
Samsung's S90C commands a premium price through its QD-OLED panel, delivering superior contrast with perfect blacks, exceptional brightness at 1500 nits, and minimal input lag (6ms) for gaming enthusiasts. Sony's X90K uses full-array LED with local dimming, offering respectable performance at nearly half the cost but with noticeably lower peak brightness (1200 nits) and slightly higher input lag (8ms). Picture quality favors Samsung decisively,OLED technology provides dramatically better color accuracy, wider viewing angles, and richer HDR performance across Quantum HDR and HDR10+ content. Audio differs marginally; Samsung's 40W 2.1ch system outpaces Sony's 20W 2.0ch setup. Both handle gaming competently with VRR and ALLM support, though Samsung's 144Hz Game Mode edge matters for competitive play. Sony compensates with better value proposition for casual viewers prioritizing budget, while Samsung justifies its $900 premium for discerning picture quality seekers. For most consumers, Samsung S90C delivers transformative image quality; Sony X90K remains solid for budget-conscious buyers accepting LED compromises.
Who Should Buy
Buy the Samsung S90C 65" (4K OLED) if…
- →65-inch QD-OLED at $1,999 undercuts LG C3 OLED while being brighter
- →Wider color gamut and higher brightness than traditional WOLED panels
- →Infinite contrast with no light bleed or blooming
Buy the Sony X90K 65" (Full Array LED) if…
- →Excellent Sony image processing at a competitive mid-range price
- →Full Array Local Dimming provides solid contrast for an LED TV
- →Dolby Vision and Dolby Atmos for home theater HDR experience
Category Scores
Pros & Cons
Samsung S90C 65" (4K OLED)
Pros
- 65-inch QD-OLED at $1,999 undercuts LG C3 OLED while being brighter
- Wider color gamut and higher brightness than traditional WOLED panels
- Infinite contrast with no light bleed or blooming
- Excellent for gaming with 4K@144Hz, VRR, and low input lag
- Anti-glare coating reduces reflections in bright rooms
Cons
- No Dolby Vision — HDR10+ only
- 40W speakers are underwhelming for a $2,000 TV — needs a soundbar
- Potential OLED burn-in risk with static content
- Wi-Fi 5 on a premium 2023 TV feels like a cost-cutting measure
Sony X90K 65" (Full Array LED)
Pros
- Excellent Sony image processing at a competitive mid-range price
- Full Array Local Dimming provides solid contrast for an LED TV
- Dolby Vision and Dolby Atmos for home theater HDR experience
- 120Hz with VRR and ALLM — capable gaming display
- Google TV with Chromecast built-in for seamless streaming
Cons
- Only 2 of 4 HDMI ports support 4K@120Hz
- 20W audio is very weak — soundbar essential
- Bluetooth 4.2 and Wi-Fi 5 are behind current standards
- Some blooming visible with full array backlighting in dark scenes
Full Specifications
| Spec | Samsung S90C 65" (4K OLED) | Sony X90K 65" (Full Array LED) |
|---|---|---|
| Body | ||
| VESA mount | 300 x 300mm | 300 x 300mm |
| Weight | 40.6 lbs | 46.3 lbs |
| Dimensions | 56.8 x 32.5 x 0.5 inches | 57.2 x 33.1 x 2.7 inches |
| Dimensions (w/ stand) | 56.8 x 34.5 x 10.1 inches | 57.2 x 35.3 x 12.0 inches |
| Audio | ||
| Output (watts) | 40 | 20 |
| Speakers | 2.1ch | 2.0ch Acoustic Multi-Audio |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 6 | 8 |
| Display | ||
| HDR | Quantum HDR OLED, HDR10+, HLG | Dolby Vision, HDR10, HLG |
| Size | 65" | 65" |
| Type | QD-OLED | Full Array LED (VA LCD) |
| Resolution | 3840 x 2160 (4K) | 3840 x 2160 (4K) |
| Refresh rate | 120Hz (144Hz via Game Mode) | 120Hz |
| Brightness (nits) | 1500 | 1200 |
| Smart TV | ||
| Os | Tizen OS | Google TV |
| Voice assistant | Bixby, Alexa, Google Assistant | Google Assistant, Alexa |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 | Wi-Fi 5 |
| Ethernet | ||
| Bluetooth | 5.2 | 4.2 |
| USB ports | 2 | 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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