Between the C5 OLED 65 and QM751 Mini LED 65, the C5 OLED 65 comes out ahead in refresh rate and hdmi 2.1 ports, while the QM751 Mini LED 65 wins on peak brightness and smart os. Overall, the C5 OLED 65 scores 63.5 and the QM751 Mini LED 65 scores 69.5 on our Mars Score.
Which should you buy?
The QM751 Mini LED 65 edges ahead on the Mars Score (63.5 vs 69.5), but the 6.0-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the C5 OLED 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, panel type.
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. Its strongest claims are peak brightness, smart os.
Both ship with comparable screen size, dolby vision, vrr, so those specs don't separate the two — focus on the differences below.
Bottom line: the QM751 Mini LED 65 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why LG - C5 OLED 65 wins
- ▲Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
- ▲HDMI 2.1 ports — 2.00 more. 4 vs 2.
- ▲Panel type: OLED (vs Mini-LED).
Why TCL - QM751 Mini LED 65 wins
- ▲Peak brightness — 130.77% more. 3000 nits vs 1300 nits.
- ▲Smart OS: Google TV (vs webOS).
Spec comparison
Display
| Spec | LG - C5 OLED 65 | TCL - QM751 Mini LED 65 |
|---|---|---|
| Screen sizeⓘ | 65 " | 65 " |
| Panel typeⓘ | OLEDlead | Mini-LED |
| Resolutionⓘ | 4K | 4K |
| Refresh rateⓘ | 144 Hzlead | 120 Hz |
| Peak brightnessⓘ | 1300 nits | 3000 nitslead |
HDR & Smart
| Spec | LG - C5 OLED 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 - C5 OLED 65 | TCL - QM751 Mini LED 65 |
|---|---|---|
| HDMI 2.1 portsⓘ | 4lead | 2 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, C5 OLED 65 or QM751 Mini LED 65?+
QM751 Mini LED 65 peaks at 3000 nits vs 1300 nits.
Which is better for gaming, C5 OLED 65 or QM751 Mini LED 65?+
C5 OLED 65 offers 144Hz refresh and 4 HDMI 2.1 ports.
Does C5 OLED 65 or QM751 Mini LED 65 support Dolby Vision?+
Both support Dolby Vision.
Spec-level deep dives
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