Between the C4 OLED 65 and QM851 Mini LED 65, the C4 OLED 65 comes out ahead in hdmi 2.1 ports and panel type, while the QM851 Mini LED 65 wins on peak brightness and smart os. Overall, the C4 OLED 65 scores 61.9 and the QM851 Mini LED 65 scores 76.9 on our Mars Score.
Which should you buy?
The QM851 Mini LED 65 is the clear pick on raw spec strength, leading by 15.0 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 C4 OLED 65 if you care most about hdmi 2.1 ports and panel type. The biggest gaps in its favor are hdmi 2.1 ports, panel type.
Pick the QM851 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, refresh rate, dolby vision, so those specs don't separate the two — focus on the differences below.
Bottom line: the QM851 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 - C4 OLED 65 wins
- ▲HDMI 2.1 ports — 2.00 more. 4 vs 2.
- ▲Panel type: OLED (vs Mini-LED).
Why TCL - QM851 Mini LED 65 wins
- ▲Peak brightness — 400.00% more. 5000 nits vs 1000 nits.
- ▲Smart OS: Google TV (vs webOS).
Spec comparison
Display
| Spec | LG - C4 OLED 65 | TCL - QM851 Mini LED 65 |
|---|---|---|
| Screen sizeⓘ | 65 " | 65 " |
| Panel typeⓘ | OLEDlead | Mini-LED |
| Resolutionⓘ | 4K | 4K |
| Refresh rateⓘ | 144 Hz | 144 Hz |
| Peak brightnessⓘ | 1000 nits | 5000 nitslead |
HDR & Smart
| Spec | LG - C4 OLED 65 | TCL - QM851 Mini LED 65 |
|---|---|---|
| Dolby Visionⓘ | true | true |
| HDR10+ⓘ | false | truelead |
| Smart OS | webOS | Google TVlead |
| Dolby Atmosⓘ | true | true |
Gaming
| Spec | LG - C4 OLED 65 | TCL - QM851 Mini LED 65 |
|---|---|---|
| HDMI 2.1 portsⓘ | 4lead | 2 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, C4 OLED 65 or QM851 Mini LED 65?+
QM851 Mini LED 65 peaks at 5000 nits vs 1000 nits.
Which is better for gaming, C4 OLED 65 or QM851 Mini LED 65?+
C4 OLED 65 offers 144Hz refresh and 4 HDMI 2.1 ports.
Does C4 OLED 65 or QM851 Mini LED 65 support Dolby Vision?+
Both support Dolby Vision.
Spec-level deep dives
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