Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Samsung - QN900F 8K 65 | TCL - C855 Mini LED 65 |
|---|---|---|
| Peak brightness | 3000 nits | 3500 nits |
| Refresh rate | 165 Hz | 144 Hz |
| HDMI 2.1 ports | 4 | 2 |
| Dolby Vision | false | true |
| Smart OS | Tizen | Google TV |
Between the QN900F 8K 65 and C855 Mini LED 65, the QN900F 8K 65 comes out ahead in refresh rate / hdmi 2.1 ports, while the C855 Mini LED 65 wins on peak brightness / dolby vision. Overall, the QN900F 8K 65 scores 74.1 and the C855 Mini LED 65 scores 74.3 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (74.1 vs 74.3). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the QN900F 8K 65 if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are refresh rate, hdmi 2.1 ports. The single most decisive one: Refresh rate — 14.58% more. 165 Hz vs 144 Hz.
Pick the C855 Mini LED 65 if you care most about peak brightness / dolby vision. Its strongest claims are peak brightness, dolby vision, smart os. The single most decisive one: Peak brightness — 16.67% more. 3500 nits vs 3000 nits.
Both ship with comparable screen size, panel type, vrr, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Samsung - QN900F 8K 65 or TCL - C855 Mini LED 65?
TCL - C855 Mini LED 65 leads the current Mars Score by 0.2 points.The more useful decision is the trade-off behind that result: compare refresh rate, hdmi 2.1 ports against the way you will actually use the product.
Choose Samsung - QN900F 8K 65 if…
Samsung - QN900F 8K 65 has the measurable edge on refresh rate hz, hdmi 2 1 count.
Choose TCL - C855 Mini LED 65 if…
TCL - C855 Mini LED 65 has the measurable edge on peak brightness nits, has dolby vision, smart os.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Samsung - QN900F 8K 65 wins
- ▲Refresh rate — 14.58% more. 165 Hz vs 144 Hz.
- ▲HDMI 2.1 ports — 2.00 more. 4 vs 2.
Why TCL - C855 Mini LED 65 wins
- ▲Peak brightness — 16.67% more. 3500 nits vs 3000 nits.
- ▲Has Dolby Vision.
- ▲Smart OS: Google TV (vs Tizen).
Spec comparison
Display
| Spec | Samsung - QN900F 8K 65 | TCL - C855 Mini LED 65 |
|---|---|---|
| Screen size | 65 " | 65 " |
| Panel typeⓘ | Mini-LED | Mini-LED |
| Resolutionⓘ | 8Klead | 4K |
| Refresh rateⓘ | 165 Hzlead | 144 Hz |
| Peak brightnessⓘ | 3000 nits | 3500 nitslead |
HDR & Smart
| Spec | Samsung - QN900F 8K 65 | TCL - C855 Mini LED 65 |
|---|---|---|
| Dolby Visionⓘ | false | truelead |
| HDR10+ⓘ | true | true |
| Smart OS | Tizen | Google TVlead |
| Dolby Atmosⓘ | true | true |
Gaming
| Spec | Samsung - QN900F 8K 65 | TCL - C855 Mini LED 65 |
|---|---|---|
| HDMI 2.1 portsⓘ | 4lead | 2 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, QN900F 8K 65 or C855 Mini LED 65?+
C855 Mini LED 65 peaks at 3500 nits vs 3000 nits.
Which is better for gaming, QN900F 8K 65 or C855 Mini LED 65?+
QN900F 8K 65 offers 165Hz refresh and 4 HDMI 2.1 ports.
Does QN900F 8K 65 or C855 Mini LED 65 support Dolby Vision?+
C855 Mini LED 65 supports Dolby Vision; QN900F 8K 65 does not.