Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | LG - QNED99 Mini LED 65 | TCL - QM751 Mini LED 65 |
|---|---|---|
| Refresh rate | 144 Hz | 120 Hz |
| Peak brightness | 2500 nits | 3000 nits |
| HDMI 2.1 ports | 4 | 2 |
| Smart OS | webOS | Google TV |
Between the QNED99 Mini LED 65 and QM751 Mini LED 65, the QNED99 Mini LED 65 comes out ahead in refresh rate / hdmi 2.1 ports, while the QM751 Mini LED 65 wins on peak brightness / smart os. Overall, the QNED99 Mini LED 65 scores 70.6 and the QM751 Mini LED 65 scores 70.6 on our Mars Score.
Which should you buy?
These two are evenly matched on the broad strokes; the decision sits on which individual spec advantages weigh more for your use.
Pick the QNED99 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 refresh rate, hdmi 2.1 ports. The single most decisive one: Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
Pick the QM751 Mini LED 65 if you care most about peak brightness / smart os. Its strongest claims are peak brightness, smart os. The single most decisive one: Peak brightness — 20.00% more. 3000 nits vs 2500 nits.
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: LG - QNED99 Mini LED 65 or TCL - QM751 Mini LED 65?
The two products are effectively tied on the current Mars Score.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 LG - QNED99 Mini LED 65 if…
LG - QNED99 Mini LED 65 has the measurable edge on refresh rate hz, hdmi 2 1 count.
Choose TCL - QM751 Mini LED 65 if…
TCL - QM751 Mini LED 65 has the measurable edge on peak brightness nits, 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 LG - QNED99 Mini LED 65 wins
- ▲Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
- ▲HDMI 2.1 ports — 2.00 more. 4 vs 2.
Why TCL - QM751 Mini LED 65 wins
- ▲Peak brightness — 20.00% more. 3000 nits vs 2500 nits.
- ▲Smart OS: Google TV (vs webOS).
Spec comparison
Display
| Spec | LG - QNED99 Mini LED 65 | TCL - QM751 Mini LED 65 |
|---|---|---|
| Screen size | 65 " | 65 " |
| Panel typeⓘ | Mini-LED | Mini-LED |
| Resolutionⓘ | 4K | 4K |
| Refresh rateⓘ | 144 Hzlead | 120 Hz |
| Peak brightnessⓘ | 2500 nits | 3000 nitslead |
HDR & Smart
| Spec | LG - QNED99 Mini LED 65 | TCL - QM751 Mini LED 65 |
|---|---|---|
| Dolby Visionⓘ | true | true |
| HDR10+ⓘ | false | truelead |
| Smart OS | webOS | Google TVlead |
| Dolby Atmosⓘ | true | true |
Gaming
| Spec | LG - QNED99 Mini LED 65 | TCL - QM751 Mini LED 65 |
|---|---|---|
| HDMI 2.1 portsⓘ | 4lead | 2 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, QNED99 Mini LED 65 or QM751 Mini LED 65?+
QM751 Mini LED 65 peaks at 3000 nits vs 2500 nits.
Which is better for gaming, QNED99 Mini LED 65 or QM751 Mini LED 65?+
QNED99 Mini LED 65 offers 144Hz refresh and 4 HDMI 2.1 ports.
Does QNED99 Mini LED 65 or QM751 Mini LED 65 support Dolby Vision?+
Both support Dolby Vision.