Between the B5 OLED 65 and S90F QD-OLED 65, the B5 OLED 65 comes out ahead in dolby vision and smart os, while the S90F QD-OLED 65 wins on peak brightness and refresh rate. Overall, the B5 OLED 65 scores 57.9 and the S90F QD-OLED 65 scores 67.5 on our Mars Score.
Which should you buy?
The S90F QD-OLED 65 is the clear pick on raw spec strength, leading by 9.6 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 dolby vision and smart os. The biggest gaps in its favor are dolby vision, smart os.
Pick the S90F QD-OLED 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, panel type.
Both ship with comparable screen size, hdmi 2.1 ports, vrr, so those specs don't separate the two — focus on the differences below.
Bottom line: the S90F QD-OLED 65 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why LG - B5 OLED 65 wins
- ▲Has Dolby Vision.
- ▲Smart OS: webOS (vs Tizen).
Why Samsung - S90F QD-OLED 65 wins
- ▲Peak brightness — 180.00% more. 2100 nits vs 750 nits.
- ▲Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
- ▲Panel type: QD-OLED (vs OLED).
Spec comparison
Display
| Spec | LG - B5 OLED 65 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| Screen sizeⓘ | 65 " | 65 " |
| Panel typeⓘ | OLED | QD-OLEDlead |
| Resolutionⓘ | 4K | 4K |
| Refresh rateⓘ | 120 Hz | 144 Hzlead |
| Peak brightnessⓘ | 750 nits | 2100 nitslead |
HDR & Smart
| Spec | LG - B5 OLED 65 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| Dolby Visionⓘ | truelead | false |
| HDR10+ⓘ | false | truelead |
| Smart OS | webOSlead | Tizen |
| Dolby Atmosⓘ | true | true |
Gaming
| Spec | LG - B5 OLED 65 | Samsung - S90F QD-OLED 65 |
|---|---|---|
| HDMI 2.1 portsⓘ | 4 | 4 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, B5 OLED 65 or S90F QD-OLED 65?+
S90F QD-OLED 65 peaks at 2100 nits vs 750 nits.
Which is better for gaming, B5 OLED 65 or S90F QD-OLED 65?+
S90F QD-OLED 65 offers 144Hz refresh and 4 HDMI 2.1 ports.
Does B5 OLED 65 or S90F QD-OLED 65 support Dolby Vision?+
B5 OLED 65 supports Dolby Vision; S90F QD-OLED 65 does not.
Spec-level deep dives
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