Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | LG - B5 OLED 65 | LG - QNED99 Mini LED 65 |
|---|---|---|
| Peak brightness | 750 nits | 2500 nits |
| Refresh rate | 120 Hz | 144 Hz |
| Panel type | OLED | Mini-LED |
Between the B5 OLED 65 and QNED99 Mini LED 65, the B5 OLED 65 comes out ahead in panel type, while the QNED99 Mini LED 65 wins on peak brightness / refresh rate. Overall, the B5 OLED 65 scores 65 and the QNED99 Mini LED 65 scores 70.6 on our Mars Score.
Which should you buy?
The QNED99 Mini LED 65 edges ahead on the Mars Score (65 vs 70.6), but the 5.6-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the B5 OLED 65 if you care most about panel type. The biggest gaps in its favor are panel type. The single most decisive one: Panel type: OLED (vs Mini-LED).
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. Its strongest claims are peak brightness, refresh rate. The single most decisive one: Peak brightness — 233.33% more. 2500 nits vs 750 nits.
Both ship with comparable screen size, dolby vision, hdmi 2.1 ports, so those specs do not separate the two — focus on the differences below.
Bottom line: the QNED99 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 LG - QNED99 Mini LED 65?
LG - QNED99 Mini LED 65 leads the current Mars Score by 5.6 points.The more useful decision is the trade-off behind that result: compare panel type, refresh rate against the way you will actually use the product.
Choose LG - B5 OLED 65 if…
LG - B5 OLED 65 has the measurable edge on panel type.
Choose LG - QNED99 Mini LED 65 if…
LG - QNED99 Mini LED 65 has the measurable edge on peak brightness nits, refresh rate hz.
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
- ▲Panel type: OLED (vs Mini-LED).
Why LG - QNED99 Mini LED 65 wins
- ▲Peak brightness — 233.33% more. 2500 nits vs 750 nits.
- ▲Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
Spec comparison
Display
| Spec | LG - B5 OLED 65 | LG - QNED99 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 | 2500 nitslead |
HDR & Smart
| Spec | LG - B5 OLED 65 | LG - QNED99 Mini LED 65 |
|---|---|---|
| Dolby Visionⓘ | true | true |
| HDR10+ⓘ | false | false |
| Smart OS | webOS | webOS |
| Dolby Atmosⓘ | true | true |
Gaming
| Spec | LG - B5 OLED 65 | LG - QNED99 Mini LED 65 |
|---|---|---|
| HDMI 2.1 portsⓘ | 4 | 4 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, B5 OLED 65 or QNED99 Mini LED 65?+
QNED99 Mini LED 65 peaks at 2500 nits vs 750 nits.
Which is better for gaming, B5 OLED 65 or QNED99 Mini LED 65?+
QNED99 Mini LED 65 offers 144Hz refresh and 4 HDMI 2.1 ports.
Does B5 OLED 65 or QNED99 Mini LED 65 support Dolby Vision?+
Both support Dolby Vision.