Is the CU8000 good for dark-room movie watching?

It is serviceable but not ideal. The edge-lit panel struggles with deep blacks and shows some blooming around bright objects in dark scenes. A QLED or Mini-LED set handles that better.

Does it support 120Hz gaming?

No. The panel is 60Hz, so it suits casual console play rather than high-frame-rate gaming. Gamers wanting 120Hz and VRR should look at Samsung's QLED models.

What is the difference from Samsung's QLED TVs?

QLED sets use quantum dots for higher brightness and better color, and usually have better contrast. The CU8000 is the entry Crystal UHD tier, so it costs less in features rather than in size.

Does it have Alexa built in?

Yes. Alexa is built in, and the TV also works with other voice assistants through its smart platform. You can control apps and inputs by voice without a separate speaker.

What ports does it have?

It offers HDMI, USB, Ethernet, Wi-Fi and Bluetooth. Check the exact HDMI count for your console and soundbar setup before mounting it.

Is 75 inches too big for an average room?

It suits rooms where the sofa sits roughly 8 to 12 feet from the screen. Closer than that, lower-resolution content can look soft and the panel's viewing-angle limits are more noticeable.