Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | TCL - QM751 Mini LED 65 | TCL - QM6K 65 |
|---|---|---|
| Peak brightness | 3000 nits | 1800 nits |
| Refresh rate | 120 Hz | 144 Hz |
Between the QM751 Mini LED 65 and QM6K 65, the QM751 Mini LED 65 comes out ahead in peak brightness, while the QM6K 65 wins on refresh rate. Overall, the QM751 Mini LED 65 scores 70.6 and the QM6K 65 scores 68 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (70.6 vs 68). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the QM751 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. The biggest gaps in its favor are peak brightness. The single most decisive one: Peak brightness — 66.67% more. 3000 nits vs 1800 nits.
Pick the QM6K 65 if you care most about refresh rate. Its strongest claims are refresh rate. The single most decisive one: Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
Both ship with comparable screen size, panel type, dolby vision, 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: TCL - QM751 Mini LED 65 or TCL - QM6K 65?
TCL - QM751 Mini LED 65 leads the current Mars Score by 2.6 points.The more useful decision is the trade-off behind that result: compare refresh rate against the way you will actually use the product.
Choose TCL - QM751 Mini LED 65 if…
TCL - QM751 Mini LED 65 has the measurable edge on peak brightness nits.
Choose TCL - QM6K 65 if…
TCL - QM6K 65 has the measurable edge on refresh rate hz.
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 TCL - QM751 Mini LED 65 wins
- ▲Peak brightness — 66.67% more. 3000 nits vs 1800 nits.
Why TCL - QM6K 65 wins
- ▲Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
Spec comparison
Display
| Spec | TCL - QM751 Mini LED 65 | TCL - QM6K 65 |
|---|---|---|
| Screen size | 65 " | 65 " |
| Panel typeⓘ | Mini-LED | Mini-LED |
| Resolutionⓘ | 4K | 4K |
| Refresh rateⓘ | 120 Hz | 144 Hzlead |
| Peak brightnessⓘ | 3000 nitslead | 1800 nits |
HDR & Smart
| Spec | TCL - QM751 Mini LED 65 | TCL - QM6K 65 |
|---|---|---|
| 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 - QM6K 65 |
|---|---|---|
| HDMI 2.1 portsⓘ | 2 | 2 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, QM751 Mini LED 65 or QM6K 65?+
QM751 Mini LED 65 peaks at 3000 nits vs 1800 nits.
Which is better for gaming, QM751 Mini LED 65 or QM6K 65?+
QM6K 65 offers 144Hz refresh and 2 HDMI 2.1 ports.
Does QM751 Mini LED 65 or QM6K 65 support Dolby Vision?+
Both support Dolby Vision.