Between the S90F QD-OLED 65 and QM851 Mini LED 75, the S90F QD-OLED 65 comes out ahead in hdmi 2.1 ports / panel type, while the QM851 Mini LED 75 wins on peak brightness / screen size. Overall, the S90F QD-OLED 65 scores 64.5 and the QM851 Mini LED 75 scores 79.6 on our Mars Score.
Which should you buy?
The QM851 Mini LED 75 is the clear pick on raw spec strength, leading by 15.1 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
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.
Pick the QM851 Mini LED 75 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, screen size, dolby vision, among others.
Both ship with comparable refresh rate, vrr, so those specs do not separate the two — focus on the differences below.
Bottom line: the QM851 Mini LED 75 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
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 - QM851 Mini LED 75 wins
- ▲Peak brightness — 233.33% more. 5000 nits vs 1500 nits.
- ▲Screen size — 15.38% more. 75 " vs 65 ".
- ▲Has Dolby Vision.
- ▲Smart OS: Google TV (vs Tizen).
Spec comparison
Display
| Spec | Samsung - S90F QD-OLED 65 | TCL - QM851 Mini LED 75 |
|---|---|---|
| Screen sizeⓘ | 65 " | 75 "lead |
| Panel typeⓘ | QD-OLEDlead | Mini-LED |
| Resolutionⓘ | 4K | 4K |
| Refresh rateⓘ | 144 Hz | 144 Hz |
| Peak brightnessⓘ | 1500 nits | 5000 nitslead |
HDR & Smart
| Spec | Samsung - S90F QD-OLED 65 | TCL - QM851 Mini LED 75 |
|---|---|---|
| Dolby Visionⓘ | false | truelead |
| HDR10+ⓘ | true | true |
| Smart OS | Tizen | Google TVlead |
| Dolby Atmosⓘ | true | true |
Gaming
| Spec | Samsung - S90F QD-OLED 65 | TCL - QM851 Mini LED 75 |
|---|---|---|
| HDMI 2.1 portsⓘ | 4lead | 2 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, S90F QD-OLED 65 or QM851 Mini LED 75?+
QM851 Mini LED 75 peaks at 5000 nits vs 1500 nits.
Which is better for gaming, S90F QD-OLED 65 or QM851 Mini LED 75?+
S90F QD-OLED 65 offers 144Hz refresh and 4 HDMI 2.1 ports.
Does S90F QD-OLED 65 or QM851 Mini LED 75 support Dolby Vision?+
QM851 Mini LED 75 supports Dolby Vision; S90F QD-OLED 65 does not.
Spec-level deep dives
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