Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | LG - G5 OLED evo 77 | Samsung - QN900F 8K 65 |
|---|---|---|
| Peak brightness | 4000 nits | 3000 nits |
| Screen size | 77 " | 65 " |
| Dolby Vision | true | false |
| Panel type | OLED | Mini-LED |
| Smart OS | webOS | Tizen |
Between the G5 OLED evo 77 and QN900F 8K 65, the G5 OLED evo 77 comes out ahead in peak brightness / screen size, while the QN900F 8K 65 wins on several specs. Overall, the G5 OLED evo 77 scores 82.8 and the QN900F 8K 65 scores 74.1 on our Mars Score.
Which should you buy?
The G5 OLED evo 77 is the clear pick on raw spec strength, leading by 8.7 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 G5 OLED evo 77 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, dolby vision, among others. The single most decisive one: Peak brightness — 33.33% more. 4000 nits vs 3000 nits.
The QN900F 8K 65 similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable refresh rate, hdmi 2.1 ports, vrr, so those specs do not separate the two — focus on the differences below.
Bottom line: the G5 OLED evo 77 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 - G5 OLED evo 77 or Samsung - QN900F 8K 65?
LG - G5 OLED evo 77 leads the current Mars Score by 8.7 points.The more useful decision is the trade-off behind that result: compare screen size, panel type against the way you will actually use the product.
Choose LG - G5 OLED evo 77 if…
LG - G5 OLED evo 77 has the measurable edge on peak brightness nits, screen size in, has dolby vision.
Choose Samsung - QN900F 8K 65 if…
Samsung - QN900F 8K 65 does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
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 - G5 OLED evo 77 wins
- ▲Peak brightness — 33.33% more. 4000 nits vs 3000 nits.
- ▲Screen size — 18.46% more. 77 " vs 65 ".
- ▲Has Dolby Vision.
- ▲Panel type: OLED (vs Mini-LED).
- ▲Smart OS: webOS (vs Tizen).
Why Samsung - QN900F 8K 65 wins
- No decisive advantages.
Spec comparison
Display
| Spec | LG - G5 OLED evo 77 | Samsung - QN900F 8K 65 |
|---|---|---|
| Screen size | 77 "lead | 65 " |
| Panel typeⓘ | OLEDlead | Mini-LED |
| Resolutionⓘ | 4K | 8Klead |
| Refresh rateⓘ | 165 Hz | 165 Hz |
| Peak brightnessⓘ | 4000 nitslead | 3000 nits |
HDR & Smart
| Spec | LG - G5 OLED evo 77 | Samsung - QN900F 8K 65 |
|---|---|---|
| Dolby Visionⓘ | truelead | false |
| HDR10+ⓘ | false | truelead |
| Smart OS | webOSlead | Tizen |
| Dolby Atmosⓘ | true | true |
Gaming
| Spec | LG - G5 OLED evo 77 | Samsung - QN900F 8K 65 |
|---|---|---|
| HDMI 2.1 portsⓘ | 4 | 4 |
| VRRⓘ | true | true |
| ALLM | true | true |
Frequently asked
Which is brighter, G5 OLED evo 77 or QN900F 8K 65?+
G5 OLED evo 77 peaks at 4000 nits vs 3000 nits.
Which is better for gaming, G5 OLED evo 77 or QN900F 8K 65?+
G5 OLED evo 77 offers 165Hz refresh and 4 HDMI 2.1 ports.
Does G5 OLED evo 77 or QN900F 8K 65 support Dolby Vision?+
G5 OLED evo 77 supports Dolby Vision; QN900F 8K 65 does not.