Is the U7900F good for gaming?

It handles casual console play, but the panel tops out at 60Hz and has no variable refresh rate or high-bandwidth gaming features. Serious gamers should look at Samsung's QLED or Neo QLED sets.

How does it compare with Samsung's QLED TVs?

QLED models add a quantum dot layer for wider color and higher brightness, and many add full-array local dimming. The U7900F is the entry tier, so it wins on screen size for the money rather than picture quality.

Does it need a soundbar?

Object Tracking Sound Lite moves audio with on-screen action, but built-in TV speakers are thin on bass. A soundbar or sound system improves movie and sports audio noticeably.

The TV, its stand, a remote and the power cable. A wall mount and HDMI cables are not included.

Does it run Samsung's Tizen apps?

Yes. It uses the Tizen smart platform with the major streaming apps and Samsung TV Plus free channels, plus support for voice assistants and SmartThings.

Is 75 inches too big for a normal room?

For a typical couch distance of 8 to 10 feet, 75 inches is immersive and fine for 4K content. In a small room it can dominate the wall, so measure the space first.