Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Samsung - QN900F 8K 65 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| Peak brightness | 3000 nits | 2100 nits |
| Refresh rate | 165 Hz | 144 Hz |
| Panel type | Mini-LED | QD-OLED |
Between the QN900F 8K 65 and S90F QD-OLED 65, the QN900F 8K 65 comes out ahead in peak brightness / refresh rate, while the S90F QD-OLED 65 wins on panel type. Overall, the QN900F 8K 65 scores 74.1 and the S90F QD-OLED 65 scores 74.7 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (74.1 vs 74.7). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the QN900F 8K 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, refresh rate. The single most decisive one: Peak brightness — 42.86% more. 3000 nits vs 2100 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, dolby vision, 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: Samsung - QN900F 8K 65 or Samsung - S90F QD-OLED 65?
Samsung - S90F QD-OLED 65 leads the current Mars Score by 0.6 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 Samsung - QN900F 8K 65 if…
Samsung - QN900F 8K 65 has the measurable edge on peak brightness nits, refresh rate hz.
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 Samsung - QN900F 8K 65 wins
- ▲Peak brightness — 42.86% more. 3000 nits vs 2100 nits.
- ▲Refresh rate — 14.58% more. 165 Hz vs 144 Hz.
Why Samsung - S90F QD-OLED 65 wins
- ▲Panel type: QD-OLED (vs Mini-LED).
Spec comparison
Display
| Spec | Samsung - QN900F 8K 65 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| Screen size | 65 " | 65 " |
| Panel typeⓘ | Mini-LED | QD-OLEDlead |
| Resolutionⓘ | 8Klead | 4K |
| Refresh rateⓘ | 165 Hzlead | 144 Hz |
| Peak brightnessⓘ | 3000 nitslead | 2100 nits |
HDR & Smart
| Spec | Samsung - QN900F 8K 65 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| Dolby Visionⓘ | false | false |
| HDR10+ⓘ | true | true |
| Smart OS | Tizen | Tizen |
| Dolby Atmosⓘ | true | true |
Gaming
| Spec | Samsung - QN900F 8K 65 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| HDMI 2.1 portsⓘ | 4 | 4 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, QN900F 8K 65 or S90F QD-OLED 65?+
QN900F 8K 65 peaks at 3000 nits vs 2100 nits.
Which is better for gaming, QN900F 8K 65 or S90F QD-OLED 65?+
QN900F 8K 65 offers 165Hz refresh and 4 HDMI 2.1 ports.
Does QN900F 8K 65 or S90F QD-OLED 65 support Dolby Vision?+
Neither supports Dolby Vision.