
The LG C4 OLED 65" and Samsung QN90D 75" are most easily told apart by their overall size. On height, the Samsung QN90D 75" measures 958.0 mm against the LG C4 OLED 65"'s 833.0 mm — about 125.0 mm more. On width, the Samsung QN90D 75" measures 1671.0 mm against the LG C4 OLED 65"'s 1449.0 mm — about 222.0 mm more. On thickness, the LG C4 OLED 65" measures 46.0 mm against the Samsung QN90D 75"'s 28.0 mm — about 18.0 mm more.
The Samsung QN90D 75" is the heavier of the two at 32.10 kg, compared with 18.10 kg for the LG C4 OLED 65". That is a 14.00 kg difference (77%). The Samsung QN90D 75" carries noticeably more mass — worth factoring into wall-mount or stand choices.
| Metric | LG C4 OLED 65" | Samsung QN90D 75" | Diff |
|---|---|---|---|
| Width | 1449.0 mm | 1671.0 mm | -222.0 mm |
| Height | 833.0 mm | 958.0 mm | -125.0 mm |
| Depth | 46.0 mm | 28.0 mm | +18.0 mm |
| Weight | 18.10 kg | 32.10 kg | -14000.0 mm |