Between the QM751 Mini LED 65 and QM851 Mini LED 75, the QM751 Mini LED 65 comes out ahead in several specs, while the QM851 Mini LED 75 wins on peak brightness and refresh rate. Overall, the QM751 Mini LED 65 scores 69.5 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 10.1 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.
The QM751 Mini LED 65 doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
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, refresh rate, screen size.
Both ship with comparable panel type, dolby vision, hdmi 2.1 ports, so those specs don't 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 TCL - QM751 Mini LED 65 wins
- No decisive advantages.
Why TCL - QM851 Mini LED 75 wins
- ▲Peak brightness — 66.67% more. 5000 nits vs 3000 nits.
- ▲Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
- ▲Screen size — 15.38% more. 75 " vs 65 ".
Spec comparison
Display
| Spec | TCL - QM751 Mini LED 65 | TCL - QM851 Mini LED 75 |
|---|---|---|
| Screen sizeⓘ | 65 " | 75 "lead |
| Panel typeⓘ | Mini-LED | Mini-LED |
| Resolutionⓘ | 4K | 4K |
| Refresh rateⓘ | 120 Hz | 144 Hzlead |
| Peak brightnessⓘ | 3000 nits | 5000 nitslead |
HDR & Smart
| Spec | TCL - QM751 Mini LED 65 | TCL - QM851 Mini LED 75 |
|---|---|---|
| Dolby Visionⓘ | true | true |
| HDR10+ⓘ | true | true |
| Smart OS | Google TV | Google TV |
| Dolby Atmosⓘ | true | true |
Gaming
| Spec | TCL - QM751 Mini LED 65 | TCL - QM851 Mini LED 75 |
|---|---|---|
| HDMI 2.1 portsⓘ | 2 | 2 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, QM751 Mini LED 65 or QM851 Mini LED 75?+
QM851 Mini LED 75 peaks at 5000 nits vs 3000 nits.
Which is better for gaming, QM751 Mini LED 65 or QM851 Mini LED 75?+
QM851 Mini LED 75 offers 144Hz refresh and 2 HDMI 2.1 ports.
Does QM751 Mini LED 65 or QM851 Mini LED 75 support Dolby Vision?+
Both support Dolby Vision.
Spec-level deep dives
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