Is the RTX 5070 Ti good enough for 4K gaming?

Yes, with upscaling. It runs most current titles at 4K with DLSS enabled at high settings. At native 4K with ray tracing on, expect to lower settings in the heaviest games.

Is 16GB of RAM enough?

For most games today, yes. Some new titles already recommend 32GB, and background apps plus a browser eat into 16GB. Check whether the board has free slots for a later upgrade.

Can I upgrade the CPU later?

The AM5 socket supports newer Ryzen chips, so a 9700X or 9800X3D is a drop-in upgrade after a BIOS update. Confirm the motherboard model and BIOS support before buying.

What should I check about the power supply?

The RTX 5070 Ti needs a quality unit in the 750W range with the right PCIe power connectors. Ask for the exact PSU model, wattage and 80 Plus rating before ordering.

Does it come with Windows and a warranty?

Windows is preinstalled. Warranty length and who handles repairs vary by seller, so confirm the coverage terms for the whole system and for individual parts.