Sony X90K 65" (Full Array LED) vs Vizio OLED 55"
The Verdict
Sony's 65-inch X90K delivers superior brightness at 1200 nits with full-array local dimming, making it excellent for bright rooms and HDR content. Vizio's 55-inch OLED counters with perfect blacks, infinite contrast, and superior color accuracy typical of OLED technology, though its 600-nit peak limits performance in well-lit spaces. Picture quality favors the OLED for cinema and gaming in controlled environments, while the Sony excels in everyday viewing. Gaming performance is nearly identical (8ms vs 10ms input lag), though Sony edges ahead with marginally better responsiveness. Audio specs slightly favor Vizio's 30W output against Sony's 20W. Size matters here,Sony provides 18% more screen real estate at roughly the same price. The Sony X90K represents better value for mainstream users prioritizing brightness and screen size, while the Vizio OLED suits home theater enthusiasts accepting a smaller panel for superior contrast and blacks. For most consumers, Sony wins on practicality and versatility.
Who Should Buy
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
Buy the Vizio OLED 55" if…
- →Most affordable 55-inch OLED at $999 — perfect blacks at a budget price
- →Dolby Vision, HDR10+, and Dolby Atmos — supports all major formats
- →120Hz with VRR and ALLM — capable gaming display
Category Scores
Pros & Cons
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
Vizio OLED 55"
Pros
- Most affordable 55-inch OLED at $999 — perfect blacks at a budget price
- Dolby Vision, HDR10+, and Dolby Atmos — supports all major formats
- 120Hz with VRR and ALLM — capable gaming display
- Infinite contrast ratio with pixel-perfect black levels
- 4x HDMI ports including HDMI 2.1 for next-gen consoles
Cons
- SmartCast OS is the weakest smart TV platform — buggy and slow
- Only 600 nits peak brightness — dimmer than LG and Samsung OLEDs
- Vizio has exited the TV market — long-term software support uncertain
- Image processing quality trails LG, Sony, and Samsung OLED models
- Build quality feels inferior to similarly priced LG A2 OLED
Full Specifications
| Spec | Sony X90K 65" (Full Array LED) | Vizio OLED 55" |
|---|---|---|
| Body | ||
| VESA mount | 300 x 300mm | 300 x 300mm |
| Weight | 46.3 lbs | 33.5 lbs |
| Dimensions | 57.2 x 33.1 x 2.7 inches | 48.2 x 28.0 x 1.5 inches |
| Dimensions (w/ stand) | 57.2 x 35.3 x 12.0 inches | 48.2 x 29.7 x 10.0 inches |
| Audio | ||
| Output (watts) | 20 | 30 |
| Speakers | 2.0ch Acoustic Multi-Audio | 2.0ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 8 | 10 |
| Display | ||
| HDR | Dolby Vision, HDR10, HLG | Dolby Vision, HDR10+, HDR10, HLG |
| Size | 65" | 55" |
| Type | Full Array LED (VA LCD) | OLED |
| Resolution | 3840 x 2160 (4K) | 3840 x 2160 (4K) |
| Refresh rate | 120Hz | 120Hz |
| Brightness (nits) | 1200 | 600 |
| Smart TV | ||
| Os | Google TV | SmartCast (Chromecast built-in) |
| Voice assistant | Google Assistant, Alexa | Google Assistant, Alexa |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 | Wi-Fi 6 |
| Ethernet | ||
| Bluetooth | 4.2 | 5.0 |
| USB ports | 2 | 1 |
| HDMI ports | 4 | 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.
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