Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | LG - B5 OLED 65 | TCL - C855 Mini LED 65 |
|---|---|---|
| Peak brightness | 750 nits | 3500 nits |
| Refresh rate | 120 Hz | 144 Hz |
| HDMI 2.1 ports | 4 | 2 |
| Panel type | OLED | Mini-LED |
| Smart OS | webOS | Google TV |
Between the B5 OLED 65 and C855 Mini LED 65, the B5 OLED 65 comes out ahead in hdmi 2.1 ports / panel type, while the C855 Mini LED 65 wins on peak brightness / refresh rate. Overall, the B5 OLED 65 scores 65 and the C855 Mini LED 65 scores 74.3 on our Mars Score.
Which should you buy?
The C855 Mini LED 65 is the clear pick on raw spec strength, leading by 9.3 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 B5 OLED 65 if you care most about hdmi 2.1 ports / panel type. The biggest gaps in its favor are hdmi 2.1 ports, panel type. The single most decisive one: HDMI 2.1 ports — 2.00 more. 4 vs 2.
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, refresh rate, smart os. The single most decisive one: Peak brightness — 366.67% more. 3500 nits vs 750 nits.
Both ship with comparable screen size, dolby vision, vrr, so those specs do not 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.
Which should you buy: LG - B5 OLED 65 or TCL - C855 Mini LED 65?
TCL - C855 Mini LED 65 leads the current Mars Score by 9.3 points.The more useful decision is the trade-off behind that result: compare panel type, refresh rate, hdmi 2.1 ports against the way you will actually use the product.
Choose LG - B5 OLED 65 if…
LG - B5 OLED 65 has the measurable edge on hdmi 2 1 count, panel type.
Choose TCL - C855 Mini LED 65 if…
TCL - C855 Mini LED 65 has the measurable edge on peak brightness nits, refresh rate hz, 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 - B5 OLED 65 wins
- ▲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 — 366.67% more. 3500 nits vs 750 nits.
- ▲Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
- ▲Smart OS: Google TV (vs webOS).
Spec comparison
Display
| Spec | LG - B5 OLED 65 | TCL - C855 Mini LED 65 |
|---|---|---|
| Screen size | 65 " | 65 " |
| Panel typeⓘ | OLEDlead | Mini-LED |
| Resolutionⓘ | 4K | 4K |
| Refresh rateⓘ | 120 Hz | 144 Hzlead |
| Peak brightnessⓘ | 750 nits | 3500 nitslead |
HDR & Smart
| Spec | LG - B5 OLED 65 | TCL - C855 Mini LED 65 |
|---|---|---|
| Dolby Visionⓘ | true | true |
| HDR10+ⓘ | false | truelead |
| Smart OS | webOS | Google TVlead |
| Dolby Atmosⓘ | true | true |
Gaming
| Spec | LG - B5 OLED 65 | TCL - C855 Mini LED 65 |
|---|---|---|
| HDMI 2.1 portsⓘ | 4lead | 2 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, B5 OLED 65 or C855 Mini LED 65?+
C855 Mini LED 65 peaks at 3500 nits vs 750 nits.
Which is better for gaming, B5 OLED 65 or C855 Mini LED 65?+
C855 Mini LED 65 offers 144Hz refresh and 2 HDMI 2.1 ports.
Does B5 OLED 65 or C855 Mini LED 65 support Dolby Vision?+
Both support Dolby Vision.