Is the EX240N good for competitive FPS games?

It is a compact 23.8-inch flat monitor, a size many FPS players like because the whole screen stays in view. Light Tuner's 20 color settings let you brighten shadows for visibility.

Do I need external speakers?

No. The monitor has BenQ treVolo speakers with five sound presets, so you can play without a soundbar or desk speakers. A headset will still give better positional audio.

It is BenQ's picture-tuning feature with 20 color settings. You pick a preset that suits the genre or your taste instead of adjusting every setting by hand.

How does it compare with larger MOBIUZ models?

Larger MOBIUZ models give a bigger, more immersive picture. The EX240N trades screen size for a compact footprint and the same treVolo audio and Light Tuner features.