Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Samsung - S90F QD-OLED 65 | TCL - C855 Mini LED 65 |
|---|---|---|
| Peak brightness | 1500 nits | 3500 nits |
| HDMI 2.1 ports | 4 | 2 |
| Dolby Vision | false | true |
| Panel type | QD-OLED | Mini-LED |
| Smart OS | Tizen | Google TV |
Between the S90F QD-OLED 65 and C855 Mini LED 65, the S90F QD-OLED 65 comes out ahead in hdmi 2.1 ports / panel type, while the C855 Mini LED 65 wins on peak brightness / dolby vision. Overall, the S90F QD-OLED 65 scores 72.5 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 (72.5 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 S90F QD-OLED 65 if you care most about hdmi 2.1 ports / panel type. The biggest gaps in its favor are hdmi 2.1 ports, panel type. The single most decisive one: HDMI 2.1 ports — 2.00 more. 4 vs 2.
Pick the C855 Mini LED 65 if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are peak brightness, dolby vision, smart os. The single most decisive one: Peak brightness — 133.33% more. 3500 nits vs 1500 nits.
Both ship with comparable screen size, refresh rate, 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 - S90F QD-OLED 65 or TCL - C855 Mini LED 65?
TCL - C855 Mini LED 65 leads the current Mars Score by 1.8 points.The more useful decision is the trade-off behind that result: compare panel type, hdmi 2.1 ports against the way you will actually use the product.
Choose Samsung - S90F QD-OLED 65 if…
Samsung - S90F QD-OLED 65 has the measurable edge on hdmi 2 1 count, panel type.
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 - S90F QD-OLED 65 wins
- ▲HDMI 2.1 ports — 2.00 more. 4 vs 2.
- ▲Panel type: QD-OLED (vs Mini-LED).
Why TCL - C855 Mini LED 65 wins
- ▲Peak brightness — 133.33% more. 3500 nits vs 1500 nits.
- ▲Has Dolby Vision.
- ▲Smart OS: Google TV (vs Tizen).
Spec comparison
Display
| Spec | Samsung - S90F QD-OLED 65 | TCL - C855 Mini LED 65 |
|---|---|---|
| Screen size | 65 " | 65 " |
| Panel typeⓘ | QD-OLEDlead | Mini-LED |
| Resolutionⓘ | 4K | 4K |
| Refresh rateⓘ | 144 Hz | 144 Hz |
| Peak brightnessⓘ | 1500 nits | 3500 nitslead |
HDR & Smart
| Spec | Samsung - S90F QD-OLED 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 - S90F QD-OLED 65 | TCL - C855 Mini LED 65 |
|---|---|---|
| HDMI 2.1 portsⓘ | 4lead | 2 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, S90F QD-OLED 65 or C855 Mini LED 65?+
C855 Mini LED 65 peaks at 3500 nits vs 1500 nits.
Which is better for gaming, S90F QD-OLED 65 or C855 Mini LED 65?+
S90F QD-OLED 65 offers 144Hz refresh and 4 HDMI 2.1 ports.
Does S90F QD-OLED 65 or C855 Mini LED 65 support Dolby Vision?+
C855 Mini LED 65 supports Dolby Vision; S90F QD-OLED 65 does not.