Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Hisense - ULED X UX 85 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| Peak brightness | 5000 nits | 2100 nits |
| Screen size | 85 " | 65 " |
| Refresh rate | 165 Hz | 144 Hz |
| HDMI 2.1 ports | 2 | 4 |
| Dolby Vision | true | false |
| Smart OS | Google TV | Tizen |
Between the ULED X UX 85 and S90F QD-OLED 65, the ULED X UX 85 comes out ahead in peak brightness / screen size, while the S90F QD-OLED 65 wins on hdmi 2.1 ports / panel type. Overall, the ULED X UX 85 scores 81.8 and the S90F QD-OLED 65 scores 74.7 on our Mars Score.
Which should you buy?
The ULED X UX 85 edges ahead on the Mars Score (81.8 vs 74.7), but the 7.1-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the ULED X UX 85 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, screen size, refresh rate, among others. The single most decisive one: Peak brightness — 138.10% more. 5000 nits vs 2100 nits.
Pick the S90F QD-OLED 65 if you care most about hdmi 2.1 ports / panel type. Its strongest claims are hdmi 2.1 ports, panel type. The single most decisive one: HDMI 2.1 ports — 2.00 more. 4 vs 2.
Both ship with comparable vrr, so those specs do not separate the two — focus on the differences below.
Bottom line: the ULED X UX 85 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: Hisense - ULED X UX 85 or Samsung - S90F QD-OLED 65?
Hisense - ULED X UX 85 leads the current Mars Score by 7.1 points.The more useful decision is the trade-off behind that result: compare screen size, panel type, refresh rate, hdmi 2.1 ports against the way you will actually use the product.
Choose Hisense - ULED X UX 85 if…
Hisense - ULED X UX 85 has the measurable edge on peak brightness nits, screen size in, refresh rate hz.
Choose Samsung - S90F QD-OLED 65 if…
Samsung - S90F QD-OLED 65 has the measurable edge on hdmi 2 1 count, 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 Hisense - ULED X UX 85 wins
- ▲Peak brightness — 138.10% more. 5000 nits vs 2100 nits.
- ▲Screen size — 30.77% more. 85 " vs 65 ".
- ▲Refresh rate — 14.58% more. 165 Hz vs 144 Hz.
- ▲Has Dolby Vision.
- ▲Smart OS: Google TV (vs Tizen).
Why Samsung - S90F QD-OLED 65 wins
- ▲HDMI 2.1 ports — 2.00 more. 4 vs 2.
- ▲Panel type: QD-OLED (vs Mini-LED).
Spec comparison
Display
| Spec | Hisense - ULED X UX 85 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| Screen size | 85 "lead | 65 " |
| Panel typeⓘ | Mini-LED | QD-OLEDlead |
| Resolutionⓘ | 4K | 4K |
| Refresh rateⓘ | 165 Hzlead | 144 Hz |
| Peak brightnessⓘ | 5000 nitslead | 2100 nits |
HDR & Smart
| Spec | Hisense - ULED X UX 85 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| Dolby Visionⓘ | truelead | false |
| HDR10+ⓘ | true | true |
| Smart OS | Google TVlead | Tizen |
| Dolby Atmosⓘ | true | true |
Gaming
| Spec | Hisense - ULED X UX 85 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| HDMI 2.1 portsⓘ | 2 | 4lead |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, ULED X UX 85 or S90F QD-OLED 65?+
ULED X UX 85 peaks at 5000 nits vs 2100 nits.
Which is better for gaming, ULED X UX 85 or S90F QD-OLED 65?+
ULED X UX 85 offers 165Hz refresh and 2 HDMI 2.1 ports.
Does ULED X UX 85 or S90F QD-OLED 65 support Dolby Vision?+
ULED X UX 85 supports Dolby Vision; S90F QD-OLED 65 does not.