When hunting for gaming monitors under $100, focus on three core specs: refresh rate, response time, and panel type. Refresh rate (measured in Hz) determines how many times per second your monitor updates—144Hz is the sweet spot for competitive gaming, while 100Hz offers solid value for casual play. Response time (measured in milliseconds) should be 1ms or lower to avoid ghosting during fast motion; anything under 5ms still feels responsive for most players.
Panel type matters too. VA panels offer better contrast and deeper blacks, while IPS panels deliver superior color accuracy and wider viewing angles. TN panels are rare now but historically offered the fastest response times. For under $100, you're usually choosing between VA and IPS, each with trade-offs.
Screen size and resolution are budget constraints. A 24-inch 1080p (1920×1080) monitor is the most affordable sweet spot. Larger 27-inch screens at 1080p exist but look slightly less sharp. QHD (2560×1440) at 27 inches is rare under $100 and usually requires compromise elsewhere.
Connectivity is another consideration. HDMI is standard, but DisplayPort offers better bandwidth for high refresh rates. Built-in speakers are nice-to-have but rarely sound great. VESA mounting compatibility lets you use third-party arms instead of the included stand.
Finally, check the curve radius. A 1500R curve (meaning 1500mm radius) is aggressive and immersive; lower numbers curve more sharply. Some monitors skip the curve entirely. Curved displays are trendy but not essential—it's a comfort preference, not a performance feature.
Red flags: monitors claiming 240Hz under $100 often cut corners on color accuracy or build quality. Overly cheap stands that wobble are common; check reviews for stability feedback. Avoid no-name brands with suspiciously high ratings—look for established names like Sceptre, LG, SANSUI, Samsung, and AOC.