Is the HP EliteStudio 8 G1i good for gaming?

No. It uses integrated Intel graphics, so it handles casual and older titles at low settings but not modern games. A desktop with a dedicated GPU is the better choice for gaming.

Can I upgrade the RAM or storage?

All-in-ones are hard to open and upgrade. Buy the memory and SSD you need at purchase, since 16 GB and 512 GB may feel tight later.

Does it work with a second monitor?

Yes. It has video outputs for an external display, so you can pair the 23.8-inch touchscreen with a larger monitor for more workspace.

Is the touchscreen useful for office work?

It helps with signing documents, annotating and presentations. For typing-heavy work, a mouse and keyboard remain faster.

What is the difference between the Core Ultra 5 and Ultra 7 versions?

The Ultra 7 has more cores and higher clocks for heavier multitasking and light creative work. The Ultra 5 is enough for email, browsing and video calls.

Does it include a keyboard and mouse?

HP sells it as a complete desktop, and business all-in-ones usually ship with a wired or wireless keyboard and mouse. Confirm the bundle with the seller.