LG C4 65" vs Samsung QN90D 65"
The Verdict
Both 65-inch displays deliver exceptional 4K performance at identical $1799 price points, but excel in different areas. LG's C4 leverages OLED evo technology with perfect blacks, superior contrast, and 1ms gaming input lag for competitive players,its 1300-nit brightness handles most content excellently. Samsung's QN90D counters with Neo QLED's 4000-nit peak brightness, crushing HDR highlights and outdoor viewing scenarios, plus superior audio with 4.2.2ch Object Tracking Sound. Gaming favors LG slightly (1ms vs 5ms lag), while SDR brightness dramatically favors Samsung. LG's OLED offers thinner design and Dolby Vision support; Samsung provides more durable panel technology without burn-in risk. For dark room cinephiles prioritizing contrast and gaming responsiveness, choose the C4. For bright environments and audio enthusiasts accepting minor gaming lag, the QN90D's brightness and sound system justify selection.
Who Should Buy
Buy the LG C4 65" if…
- →Perfect black levels from self-emissive OLED pixels — best-in-class contrast
- →All four HDMI 2.1 ports at full bandwidth with VRR, ALLM, and G-Sync Compatible
- →1ms input lag makes it one of the best gaming TVs at any price
Buy the Samsung QN90D 65" if…
- →Excellent Mini-LED backlighting with over 2,000 dimming zones for deep contrast
- →All four HDMI ports support 4K@120Hz — ideal for multi-console gaming setups
- →Up to 4,000 nits peak brightness handles even the brightest HDR highlights
Category Scores
Pros & Cons
LG C4 65"
Pros
- Perfect black levels from self-emissive OLED pixels — best-in-class contrast
- All four HDMI 2.1 ports at full bandwidth with VRR, ALLM, and G-Sync Compatible
- 1ms input lag makes it one of the best gaming TVs at any price
- Dolby Vision IQ and Dolby Atmos support for premium cinematic experience
- webOS 24 is clean, fast, and nearly ad-free compared to Tizen
Cons
- OLED burn-in risk with prolonged static content (e.g. news tickers, HUDs)
- Peak brightness trails Mini-LED rivals in very bright HDR highlights
- Slightly lower brightness than the G4, limiting HDR pop in sunlit rooms
- USB-A ports are only USB 2.0 speed
Samsung QN90D 65"
Pros
- Excellent Mini-LED backlighting with over 2,000 dimming zones for deep contrast
- All four HDMI ports support 4K@120Hz — ideal for multi-console gaming setups
- Up to 4,000 nits peak brightness handles even the brightest HDR highlights
- Anti-reflection coating dramatically cuts glare in bright living rooms
- Neural Quantum Processor 4K delivers sharp, accurate upscaling from lower-resolution content
Cons
- Mini-LED blooming can still appear around bright objects on dark backgrounds
- No Dolby Atmos pass-through from the TV's built-in speakers
- Tizen OS interface can feel cluttered with sponsored content and ads
- At $1,799 it is significantly pricier than competing Mini-LED options
Full Specifications
| Spec | LG C4 65" | Samsung QN90D 65" |
|---|---|---|
| Body | ||
| VESA mount | 300 x 200mm | 400 x 400mm |
| Weight | 52.9 lbs | 71.9 lbs |
| Dimensions (w/ stand) | 57.0 x 36.9 x 10.1 inches | 57.1 x 36.6 x 13.4 inches |
| Audio | ||
| Output (watts) | 60 | 60 |
| Speakers | 2.2ch | 4.2.2ch Object Tracking Sound+ |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 1 | 5 |
| Display | ||
| HDR | Dolby Vision IQ, HDR10, HLG, Filmmaker Mode | Quantum HDR+, HDR10+, HLG |
| Size | 65" | 65" |
| Type | OLED evo | Neo QLED Mini-LED |
| Resolution | 3840 x 2160 (4K UHD) | 3840 x 2160 (4K UHD) |
| Refresh rate | 120Hz | 120Hz (4K@120Hz native) |
| Brightness (nits) | 1300 | 4000 |
| Smart TV | ||
| Os | webOS 24 | Tizen OS |
| Voice assistant | ThinQ AI, Alexa, Google Assistant | Bixby, Alexa, Google Assistant |
| Processor | ||
| Chipset | α9 Gen 7 AI Processor 4K | Neural Quantum Processor 4K |
| Connectivity | ||
| Wi-Fi | Wi-Fi 6 (802.11ax) | Wi-Fi 5 (802.11ac) |
| Ethernet | ||
| Bluetooth | 5.0 | 5.2 |
| USB ports | 3 | 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.
Explore more in tvs, see all LG products or all Samsung products. View full details for the LG C4 65" or the Samsung QN90D 65".