Gamers have long debated whether to opt for a 4K or a 1440p monitor for gaming.
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4K vs 1440p monitors: Do you need the extra pixels for gaming?
1440p vs. 1080p: How They're Different and How They Impact Work and Gaming - History-Computer
QHD vs. 4K: Which One Wins?
2K or 4K? What's Better on a Gaming Monitor Screen - Viotek
Gaming Monitor Vs. 4K TV: How To Pick Which One Is Right For You - GameSpot