10 Best 4 K 240 Hz Monitors 2025 in the United States

The ASUS ROG Strix 27” 1440P OLED Gaming Monitor (XG27AQDMG) is well-suited for gamers seeking high performance and visual quality. Its QHD resolution (2560 x 1440) offers crisp and detailed visuals, enhancing the gaming experience. The standout feature is its 240Hz refresh rate, which ensures smooth gameplay without lag. Combined with a remarkable 0.03ms response time, this monitor handles fast-paced action seamlessly, making it ideal for competitive gaming.

The OLED panel type provides excellent color accuracy and contrast, and the 99% DCI-P3 color gamut ensures vibrant and true-to-life images. The glossy finish might be prone to reflections in brightly-lit environments, which could be a minor drawback for some users. The monitor supports G-SYNC, reducing screen tearing and stuttering, further enhancing the gaming experience.

ASUS has equipped it with a custom heatsink and advanced airflow design to mitigate burn-in risk, ensuring longevity for the OLED display. The anti-flicker technology and uniform brightness settings contribute to consistent and comfortable viewing. This monitor is a strong contender for gamers looking for top-tier performance with advanced features, although those seeking 4K resolution might need to explore other options.

The LG 27" UltraGear monitor is a solid choice for gamers who want a high-refresh, sharp display with vibrant colors. It offers a QHD resolution (2560x1440), which is a step below 4K but still provides detailed visuals and is easier on your computer’s graphics card when running games at 240Hz. The 240Hz refresh rate combined with a very quick 1ms IPS panel ensures smooth, blur-free motion during fast-paced gaming. The IPS panel also delivers rich colors and wide viewing angles, which is a plus if you value image quality alongside speed.

For connectivity, it supports HDMI 2.1 and DisplayPort 1.4, both capable of pushing that high refresh rate and resolution, making it compatible with the latest gaming consoles and PCs. Adaptive sync technologies like NVIDIA G-SYNC Compatible and AMD FreeSync Premium reduce screen tearing and stuttering, improving gameplay fluidity regardless of your graphics card brand. The HDR400 certification and 95% DCI-P3 color gamut add more vividness and dynamic contrast for immersive visuals, though HDR400 is an entry-level HDR standard that won’t offer the same brightness or depth as higher-tier HDR monitors. The adjustable stand and gamer-focused display modes enhance comfort and customization.

This monitor isn’t 4K, so if you specifically need 4K resolution at 240Hz, this model won’t match that. Also, while the IPS panel balances speed and color nicely, some gamers might prefer even faster TN panels if absolute minimal input lag is the priority, though that often sacrifices color quality. This LG UltraGear monitor is well suited for serious gamers seeking ultra-smooth 1440p visuals at very high refresh rates with excellent color and compatibility, but it doesn’t deliver 4K resolution.

The ASUS ROG Swift PG32UCDM is a top-tier choice for gamers seeking a 32-inch 4K monitor. The sharp UHD resolution (3840 x 2160) combined with the QD-OLED panel ensures stunning visuals and vibrant colors, making the gaming experience truly immersive. The standout feature is its 240Hz refresh rate, which provides ultra-smooth motion, perfect for fast-paced games. Additionally, the incredibly fast 0.03ms response time virtually eliminates motion blur, enhancing clarity during intense gaming sessions.

The integration of G-SYNC compatibility helps to reduce screen tearing, ensuring a smoother gaming experience. The monitor's advanced heat management with a custom heatsink and graphene film is designed to mitigate the risk of burn-in, which is often a concern with OLED panels. Furthermore, it covers 99% of the DCI-P3 color gamut and supports true 10-bit color, rendering more detailed and accurate colors. VESA DisplayHDR 400 True Black compliance also enhances the HDR performance, offering deeper blacks and brighter highlights.

However, some potential drawbacks include its substantial size and weight (21 x 38 x 49 inches, 19.4 pounds), which might require a sturdy setup. Also, while the monitor offers extensive connectivity options, including 90W USB-C, it may be relatively more expensive compared to other monitors in the market. Despite these minor drawbacks, the ASUS ROG Swift PG32UCDM stands out as an excellent monitor for gamers looking for high performance and stunning visual quality.