Is the TCL NXTFRAME 55A300W good for gaming?

Only for casual play. The panel is 60 Hz with no variable refresh rate, so fast shooters and racing games will not feel as smooth as on a 120 Hz TV.

Does it really look like a framed picture?

Yes. The white frame, 1.1-inch depth and matte screen are designed to sit flush on the wall, and art mode shows paintings or photos when the TV is off.

How many HDMI ports does it have?

Four. That is enough for a console, a soundbar and two streaming devices without a switch.

Do I need a soundbar?

It is worth considering. Owners describe the built-in sound as ordinary, and a budget soundbar makes a clear difference for movies.

Can I use Alexa or Siri with it?

Yes. It runs Google TV with Google Assistant built in and supports Amazon Alexa and Siri through compatible devices.

Is the NXTFRAME a good value against a plain 55-inch QLED?

You pay a premium over a plain 55-inch QLED for the frame design and matte screen. If art display and glare handling matter to you, the extra is easy to justify; if you mainly game, a plain set with a faster panel gives more for the same outlay.