Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | LG - QNED99 Mini LED 65 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| Peak brightness | 2500 nits | 1500 nits |
| Dolby Vision | true | false |
| Smart OS | webOS | Tizen |
| Panel type | Mini-LED | QD-OLED |
Between the QNED99 Mini LED 65 and S90F QD-OLED 65, the QNED99 Mini LED 65 comes out ahead in peak brightness / dolby vision, while the S90F QD-OLED 65 wins on panel type. Overall, the QNED99 Mini LED 65 scores 70.6 and the S90F QD-OLED 65 scores 72.5 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (70.6 vs 72.5). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
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. The biggest gaps in its favor are peak brightness, dolby vision, smart os. The single most decisive one: Peak brightness — 66.67% more. 2500 nits vs 1500 nits.
Pick the S90F QD-OLED 65 if you care most about panel type. Its strongest claims are panel type. The single most decisive one: Panel type: QD-OLED (vs Mini-LED).
Both ship with comparable screen size, refresh rate, hdmi 2.1 ports, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: LG - QNED99 Mini LED 65 or Samsung - S90F QD-OLED 65?
Samsung - S90F QD-OLED 65 leads the current Mars Score by 1.9 points.The more useful decision is the trade-off behind that result: compare panel type against the way you will actually use the product.
Choose LG - QNED99 Mini LED 65 if…
LG - QNED99 Mini LED 65 has the measurable edge on peak brightness nits, has dolby vision, smart os.
Choose Samsung - S90F QD-OLED 65 if…
Samsung - S90F QD-OLED 65 has the measurable edge on panel type.
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 - QNED99 Mini LED 65 wins
- ▲Peak brightness — 66.67% more. 2500 nits vs 1500 nits.
- ▲Has Dolby Vision.
- ▲Smart OS: webOS (vs Tizen).
Why Samsung - S90F QD-OLED 65 wins
- ▲Panel type: QD-OLED (vs Mini-LED).
Spec comparison
Display
| Spec | LG - QNED99 Mini LED 65 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| Screen size | 65 " | 65 " |
| Panel typeⓘ | Mini-LED | QD-OLEDlead |
| Resolutionⓘ | 4K | 4K |
| Refresh rateⓘ | 144 Hz | 144 Hz |
| Peak brightnessⓘ | 2500 nitslead | 1500 nits |
HDR & Smart
| Spec | LG - QNED99 Mini LED 65 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| Dolby Visionⓘ | truelead | false |
| HDR10+ⓘ | false | truelead |
| Smart OS | webOSlead | Tizen |
| Dolby Atmosⓘ | true | true |
Gaming
| Spec | LG - QNED99 Mini LED 65 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| HDMI 2.1 portsⓘ | 4 | 4 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, QNED99 Mini LED 65 or S90F QD-OLED 65?+
QNED99 Mini LED 65 peaks at 2500 nits vs 1500 nits.
Which is better for gaming, QNED99 Mini LED 65 or S90F QD-OLED 65?+
QNED99 Mini LED 65 offers 144Hz refresh and 4 HDMI 2.1 ports.
Does QNED99 Mini LED 65 or S90F QD-OLED 65 support Dolby Vision?+
QNED99 Mini LED 65 supports Dolby Vision; S90F QD-OLED 65 does not.