# Samsung S90F 77-inch (QN77S90F): dimensions, VESA, weight and specs

Source: https://specwiseguide.com/tv/qn77s90f/
Updated: 2026-11-12 · By SMART SC Editorial Team

**Short answer:** The **QN77S90F** measures **67.7 × 38.9 × 1.8 in** without its stand (41.7 in high on it), weighs **76.7 lb** and mounts with **VESA 400x300 mm**. It's a 2025 OLED TV with a 120 Hz panel; sit 7 ft 8 in to 10 ft 5 in away.

The Samsung S90F OLED in the 77-inch class (QN77S90F) is a 2025 OLED TV. Every number below is from Samsung's US spec sheet, re-typed into our own table; the few we work out from it are marked.

*Note from the spec sheet: 4K 144 Hz on all four HDMI inputs (144 Hz with a PC). No Dolby Vision (Samsung uses HDR10+).*

## Specifications

*Samsung S90F OLED 77-inch, from Samsung's US spec sheet. Rows marked (derived) are worked out from the measured diagonal and the 16:9 shape.*

| Spec | QN77S90F |
|---|---|
| Screen class / measured diagonal | 77 in / 76.8 in |
| Screen (picture area), W × H (derived) | 66.9 × 37.7 in (170 × 96 cm) |
| Without stand, W × H × D | 67.7 × 38.9 × 1.8 in (172 × 99 × 5 cm) |
| With stand, H × D | 41.7 × 14.1 in |
| Stand width | 14.4 in pedestal |
| Weight without / with stand | 76.7 lb / 80.7 lb |
| VESA wall-mount pattern | 400x300 mm |
| Display type | OLED: OLED |
| Resolution | 4K (3840 × 2160) |
| Refresh rate | 120 Hz native, VRR up to 144 Hz |
| HDMI inputs taking 4K 120 Hz+ | 4 of 4 |
| HDR formats | HDR10+, HDR10, HLG |
| Broadcast tuner | ATSC 1.0 |
| Anti-reflection (as marketed) | none marketed |
| Model year / spec sheet read | 2025 / November 12, 2026 |

## Will it fit?

**On furniture.** Its pedestal needs a furniture top at least **18.4 in** wide (14.4 in plus 2 in each side) and 15.1 in deep. On its own stand the screen's center sits 22.3 in above the furniture top, so a **18 in** high stand puts it at a typical seated eye height of 40 in. 

**On the wall.** The TV uses VESA 400x300 mm and weighs 76.7 lb without its stand. Allow about 69.7 × 40.9 in of clear wall (1 in each side). It will stand off the wall by its own 1.8 in plus the mount's depth, which the mount's own spec sheet gives. See [how to choose a wall mount](/tv-wall-mount-types/). To compare it with other TVs against your own room, use [Will it fit?](/will-it-fit/).

## How it compares with other 77-inch TVs

Of the 5 77-inch models in our catalogue, the QN77S90F is the 4th narrowest and the **heaviest**. 77-inch TVs we list run 67.4–67.7 in wide and 51.8–76.7 lb without the stand. 

## Where to sit

For a 77-inch screen: **7 ft 8 in** from your eyes for an immersive picture (40° of view) to **10 ft 5 in** for relaxed viewing (30°). See the [viewing distance calculator](/tv-size-viewing-distance/).

## Other sizes of the Samsung S90F

| Size | Model | Width | Weight |
|---|---|---|---|
| 55 in | [QN55S90F](/tv/qn55s90f/) | 48.2 in | 35.3 lb |
| 65 in | [QN65S90F](/tv/qn65s90f/) | 56.9 in | 46.7 lb |
| 83 in | [QN83S90F](/tv/qn83s90f/) | 72.9 in | 82.9 lb |

[Check price on Amazon](https://www.amazon.com/s?k=Samsung+S90F+QN77S90F&tag=specwiseguide-20)

We haven't tested this TV. For measured brightness, input lag and reflections, see an independent lab such as [RTINGS](https://www.rtings.com/tv).

## Frequently asked questions

### What are the dimensions of the QN77S90F?

67.7 in wide, 38.9 in high and 1.8 in deep without the stand; 41.7 in high and 14.1 in deep on its stand. The picture itself is 66.9 × 37.7 in.

### What VESA mount does the QN77S90F use?

400x300 mm (width × height between the screw holes), from Samsung's spec sheet. Choose a mount that lists 400x300 and is rated for at least 76.7 lb.

### How much does the QN77S90F weigh?

76.7 lb without the stand and 80.7 lb with it.

### How far should I sit from the Samsung S90F 77-inch?

7 ft 8 in (immersive, 40° of view) to 10 ft 5 in (relaxed, 30°), eyes to screen.

## Sources

- [Samsung S90F specifications sheet](https://static.pcrichard.com/docs/QN42S90F_Specifications-Sheet_01.pdf)