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

Yes, with upscaling. It targets high frame rates at 1440p and playable 4K in most titles when DLSS is on. Demanding 4K games at maximum settings may need settings trimmed.

Do I need 64 GB of RAM for gaming?

No. Most games are fine with 16 to 32 GB. The 64 GB here helps if you stream, edit video or keep many applications open at once.

Is the Ryzen 7 9700X a good match for this graphics card?

Yes. The 9700X is a fast eight-core chip that keeps up with the RTX 5070 Ti in games. It trails higher-core rivals only in heavy rendering and encoding work.

What comes in the box?

The listing describes the desktop itself with Windows installed and Wi-Fi built in. A monitor, keyboard and mouse are not mentioned, so plan on supplying your own.

Can I upgrade it later?

The AM5 platform and DDR5 memory support future CPU upgrades, and the 2 TB SSD leaves a free drive bay in most builds. Check the power supply wattage before adding a bigger graphics card.