Roku Plus Series 55" vs Samsung S90C 65" (4K OLED)
The Verdict
Samsung's S90C represents a generational leap in TV technology compared to Roku's budget-friendly Plus Series. Picture quality differences are dramatic: the S90C's QD-OLED panel delivers perfect blacks, infinite contrast, and exceptional color accuracy with 1500 nits peak brightness versus the Roku's 700-nit QLED performance. Gaming prowess heavily favors Samsung with 120Hz refresh rate, variable refresh rate support, and 6ms input lag compared to Roku's 60Hz ceiling and 13ms lag. Audio quality is superior on the S90C with 40W 2.1ch system versus 20W 2.0ch. The Roku Plus excels in value proposition,delivering respectable 4K performance, good smart TV features, and essential connectivity at one-fifth the price. However, the Samsung S90C's superior OLED technology, gaming capabilities, and overall picture quality justify premium pricing for enthusiasts. For budget-conscious buyers seeking solid 4K content, the Roku delivers meaningful value. For serious gamers and picture quality enthusiasts, Samsung is the clear choice.
Who Should Buy
Buy the Roku Plus Series 55" if…
- →Roku OS is the simplest, cleanest smart TV platform available
- →Dolby Vision, HDR10+, AND Dolby Atmos decoding — unusual at $399
- →Works with every voice assistant: Alexa, Google, Siri (via AirPlay)
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
Category Scores
Pros & Cons
Roku Plus Series 55"
Pros
- Roku OS is the simplest, cleanest smart TV platform available
- Dolby Vision, HDR10+, AND Dolby Atmos decoding — unusual at $399
- Works with every voice assistant: Alexa, Google, Siri (via AirPlay)
- Wi-Fi 6 for reliable 4K streaming
- QLED color enhancement is visible versus basic LED panels
Cons
- 60Hz panel — no 120Hz or gaming features
- 700-nit brightness is okay but not impressive for HDR highlights
- Roku's ad-supported free channels are prominently pushed in the UI
- No VRR for next-gen console gaming
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
Full Specifications
| Spec | Roku Plus Series 55" | Samsung S90C 65" (4K OLED) |
|---|---|---|
| Body | ||
| VESA mount | 200 x 200mm | 300 x 300mm |
| Weight | 26.5 lbs | 40.6 lbs |
| Dimensions (w/ stand) | 48.4 x 30.6 x 10.2 inches | 56.8 x 34.5 x 10.1 inches |
| Dimensions | — | 56.8 x 32.5 x 0.5 inches |
| Audio | ||
| Output (watts) | 20 | 40 |
| Speakers | 2.0ch | 2.1ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 13 | 6 |
| Display | ||
| HDR | Dolby Vision, HDR10+, HLG | Quantum HDR OLED, HDR10+, HLG |
| Size | 55" | 65" |
| Type | QLED | QD-OLED |
| Resolution | 3840 x 2160 (4K UHD) | 3840 x 2160 (4K) |
| Refresh rate | 60Hz | 120Hz (144Hz via Game Mode) |
| Brightness (nits) | 700 | 1500 |
| Smart TV | ||
| Os | Roku OS | Tizen OS |
| Voice assistant | Roku Voice, Alexa, Google Assistant, Apple AirPlay 2 | Bixby, Alexa, Google Assistant |
| Processor | ||
| Chipset | Quad-core | — |
| Connectivity | ||
| Wi-Fi | Wi-Fi 6 (802.11ax) | Wi-Fi 5 |
| Ethernet | ||
| Bluetooth | 5.2 | 5.2 |
| USB ports | 1 | 2 |
| 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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