Samsung S90F 77-inch (QN77S90F): dimensions, VESA, weight and specs
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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
| 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 |
| 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. To compare it with other TVs against your own room, use Will it fit?.
How it compares with other 77-inch TVs
Of the 3 77-inch models in our catalogue, the QN77S90F is the 2nd 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.
Other sizes of the Samsung S90F
| Size | Model | Width | Weight |
|---|---|---|---|
| 55 in | QN55S90F | 48.2 in | 35.3 lb |
| 65 in | QN65S90F | 56.9 in | 46.7 lb |
| 83 in | QN83S90F | 72.9 in | 82.9 lb |
We haven’t tested this TV. For measured brightness, input lag and reflections, see an independent lab such as RTINGS.
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.