Samsung CU8000 55" vs Samsung QN900D 65" (8K)
The Verdict
Samsung's budget CU8000 delivers solid 4K performance at an exceptional price point, featuring HDR10+ support, 300-nit brightness, and ALLM gaming mode with 12ms input lag. Its 20W 2.0ch audio and Crystal Processor handle everyday streaming competently. Conversely, the QN900D represents Samsung's flagship 8K masterpiece, boasting a stunning Neo QLED Mini-LED display with 4000-nit peak brightness, 120Hz 8K capability, and advanced Quantum HDR with 64 dimming zones. Its 90W 6.2.4ch Object Tracking Sound Pro system with Dolby Atmos, 5ms input lag, and Neural Quantum Processor 8K create an unparalleled cinematic experience. The CU8000 excels as a practical, affordable 4K solution for budget-conscious buyers, while the QN900D justifies its premium pricing through cutting-edge 8K technology and professional-grade audio-visual performance. Choose the CU8000 for value; select the QN900D if future-proofing and premium experience matter.
Who Should Buy
Buy the Samsung CU8000 55" if…
- →Very affordable entry into Samsung's 4K smart TV lineup
- →HDR10+ support improves contrast in compatible content
- →Tizen OS is a mature, full-featured smart TV platform
Buy the Samsung QN900D 65" (8K) if…
- →True 8K resolution with AI-powered upscaling for lower-resolution content
- →Mini-LED backlighting with thousands of dimming zones for stunning contrast
- →90W 6.2.4ch audio system with Dolby Atmos is best-in-class built-in sound
Category Scores
Pros & Cons
Samsung CU8000 55"
Pros
- Very affordable entry into Samsung's 4K smart TV lineup
- HDR10+ support improves contrast in compatible content
- Tizen OS is a mature, full-featured smart TV platform
- Lightweight and easy to wall-mount at 27 lbs
- Crystal Processor 4K provides decent upscaling from 1080p
Cons
- 60Hz panel — no 120Hz for smooth gaming or sports
- Low peak brightness limits HDR impact
- No VRR or HDMI 2.1 — poor for next-gen consoles
- 20W speakers sound thin — a soundbar is essential
Samsung QN900D 65" (8K)
Pros
- True 8K resolution with AI-powered upscaling for lower-resolution content
- Mini-LED backlighting with thousands of dimming zones for stunning contrast
- 90W 6.2.4ch audio system with Dolby Atmos is best-in-class built-in sound
- 8K@120Hz via HDMI 2.1 future-proofs for next-gen content
- Infinity Screen design with near-zero bezels
Cons
- Extremely expensive at $4,999 for very limited 8K content
- Tizen OS still shows ads on the home screen
- Massive and heavy — requires sturdy mounting
- No Dolby Vision support — Samsung uses HDR10+ exclusively
Full Specifications
| Spec | Samsung CU8000 55" | Samsung QN900D 65" (8K) |
|---|---|---|
| Body | ||
| VESA mount | 200 x 200mm | 400 x 400mm |
| Weight | 27.1 lbs | 61.7 lbs |
| Dimensions (w/ stand) | 48.8 x 30.8 x 8.8 inches | 57.1 x 36.8 x 12.7 inches |
| Audio | ||
| Output (watts) | 20 | 90 |
| Speakers | 2.0ch | 6.2.4ch Object Tracking Sound Pro |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 12 | 5 |
| Display | ||
| HDR | HDR10+, HLG | Quantum HDR 64x, HDR10+, HLG |
| Size | 55" | 65" |
| Type | Crystal UHD LED | Neo QLED Mini-LED |
| Resolution | 3840 x 2160 (4K UHD) | 7680 x 4320 (8K) |
| Refresh rate | 60Hz | 120Hz (8K@120Hz) |
| Brightness (nits) | 300 | 4000 |
| Smart TV | ||
| Os | Tizen OS | Tizen OS |
| Voice assistant | Bixby, Alexa | Bixby, Alexa, Google Assistant |
| Processor | ||
| Chipset | Crystal Processor 4K | Neural Quantum Processor 8K |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 (802.11ac) | Wi-Fi 6E |
| Ethernet | ||
| Bluetooth | 5.2 | 5.3 |
| USB ports | 1 | 3 |
| HDMI ports | 3 | 4 |
Related Comparisons
- Samsung QN900D 65" (8K) vs Sony A95K 65" (QD-OLED)
- Samsung QN900D 65" (8K) vs Samsung S95C 65" (4K QD-OLED)
- Samsung QN900D 65" (8K) vs Samsung QN95D 65" (4K Neo QLED)
- Samsung CU8000 55" vs Sony A95K 65" (QD-OLED)
- Samsung CU8000 55" vs Samsung S95C 65" (4K QD-OLED)
- Samsung CU8000 55" vs Samsung QN95D 65" (4K Neo QLED)
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 Samsung products or all Samsung products. View full details for the Samsung CU8000 55" or the Samsung QN900D 65" (8K).