Between the C5 OLED 77 and C855 Mini LED 65, the C5 OLED 77 comes out ahead in screen size and hdmi 2.1 ports, while the C855 Mini LED 65 wins on peak brightness and smart os. Overall, the C5 OLED 77 scores 66.9 and the C855 Mini LED 65 scores 74.5 on our Mars Score.
Which should you buy?
The C855 Mini LED 65 edges ahead on the Mars Score (66.9 vs 74.5), but the 7.6-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the C5 OLED 77 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 screen size, hdmi 2.1 ports, panel type.
Pick the C855 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 refresh rate, dolby vision, vrr, so those specs don't separate the two — focus on the differences below.
Bottom line: the C855 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 77 wins
- ▲Screen size — 18.46% more. 77 " vs 65 ".
- ▲HDMI 2.1 ports — 2.00 more. 4 vs 2.
- ▲Panel type: OLED (vs Mini-LED).
Why TCL - C855 Mini LED 65 wins
- ▲Peak brightness — 169.23% more. 3500 nits vs 1300 nits.
- ▲Smart OS: Google TV (vs webOS).
Spec comparison
Display
| Spec | LG - C5 OLED 77 | TCL - C855 Mini LED 65 |
|---|---|---|
| Screen sizeⓘ | 77 "lead | 65 " |
| Panel typeⓘ | OLEDlead | Mini-LED |
| Resolutionⓘ | 4K | 4K |
| Refresh rateⓘ | 144 Hz | 144 Hz |
| Peak brightnessⓘ | 1300 nits | 3500 nitslead |
HDR & Smart
| Spec | LG - C5 OLED 77 | TCL - C855 Mini LED 65 |
|---|---|---|
| Dolby Visionⓘ | true | true |
| HDR10+ⓘ | false | truelead |
| Smart OS | webOS | Google TVlead |
| Dolby Atmosⓘ | true | true |
Gaming
| Spec | LG - C5 OLED 77 | TCL - C855 Mini LED 65 |
|---|---|---|
| HDMI 2.1 portsⓘ | 4lead | 2 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, C5 OLED 77 or C855 Mini LED 65?+
C855 Mini LED 65 peaks at 3500 nits vs 1300 nits.
Which is better for gaming, C5 OLED 77 or C855 Mini LED 65?+
C5 OLED 77 offers 144Hz refresh and 4 HDMI 2.1 ports.
Does C5 OLED 77 or C855 Mini LED 65 support Dolby Vision?+
Both support Dolby Vision.
Spec-level deep dives
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