Is the Samsung Q7F 43-inch good for gaming?

It handles console gaming at 4K, but the 60 Hz refresh rate limits smoothness compared with 120 Hz sets. Casual players will be fine; competitive gamers should look higher in the range.

Yes. It supports Q HDR, Samsung's HDR processing, so HDR content from streaming apps plays with expanded contrast and color.

Can I mount it on a wall?

Yes. It uses a 200 x 200 VESA mount and weighs about 15 lb, so most standard wall brackets will hold it.

Does it have built-in streaming apps?

Yes. It is a smart TV with Wi-Fi and internet access, so you can stream without a separate stick or box.

How does it compare with Samsung's step-up QLED models?

Step-up models add 120 Hz panels, better local dimming and brighter output. The Q7F keeps the QLED color advantage at a smaller size and simpler feature set.