Is the HP OmniBook 5 16 good for gaming?

Only for light and older titles. It relies on integrated graphics, so demanding games will run at low settings and frame rates. The 60Hz screen also caps smoothness.

Is 32 GB of RAM overkill?

Not if you keep many tabs, large spreadsheets or editing apps open at once. For plain web browsing and email it is more than you need, but it leaves headroom for years of use.

Can you use it as a tablet?

Yes. The hinge folds all the way back, and the touchscreen works in tablet, tent and stand modes. At 3.5 lb it is light enough to hold for short sessions.

How does it compare with the OmniBook X or Spectre x360?

The OmniBook 5 gives you a bigger 16-inch screen and more memory for less outlay. The Spectre x360 line adds sharper, faster displays and a more premium build, while the OmniBook X targets longer battery life in a smaller chassis.

Is the screen good outdoors?

The no-glare coating cuts reflections, which helps in bright rooms. The 1920 x 1200 panel is not especially bright, so direct sunlight will still wash it out.