The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →You do not need a PC that renders 1,000 frames per second just to select a 1,000Hz monitor mode. You do need hardware that meets the exact monitor’s signal requirements. For LG’s UltraGear 25G590B-B, that means Windows 11, DisplayPort 2.1, and one of the graphics-card families LG lists for its maximum refresh mode. Reaching very high frame rates in a particular game is a separate, game-dependent challenge.
Hardware required for LG’s 25G590B-B 1000Hz mode
Monitor requirements vary by model. LG specifies the following for the UltraGear 25G590B-B’s maximum refresh mode:
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- Operating system: Windows 11.
- Graphics card: NVIDIA RTX 50 series, or AMD Radeon RX 9070, RX 9060, or RX 7900 series, or newer.
- Connection: DisplayPort 2.1. Check that the graphics card output, monitor input, and cable support the required connection.
- Resolution and test scope: LG Canada says its internal testing verified 1000Hz signal input at Full HD (1920 × 1080) with the listed NVIDIA and AMD graphics-card families. This is LG’s signal-input verification, not an independent game benchmark.
These are LG’s requirements for this display, not a universal minimum for every monitor advertised as 1000Hz. Check the target model’s manual and support information before buying or replacing hardware. LG’s U.S. announcement lists the operating system, graphics-card families, connection, and performance caveats; LG Canada’s product information describes its Full HD signal test.
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Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Refresh rate is not the same as game FPS
Refresh rate describes how often a display updates its image; Microsoft’s example is that a 60Hz display updates 60 times per second. FPS is the number of frames a computer renders in a game. A 1000Hz setting does not make a game render 1000 unique frames per second. LG explicitly says that support for a 1000Hz refresh rate does not imply or guarantee 1000 FPS in any particular game.
#1 Best Overall
- The World’s First Full HD 1080p Native 1000Hz Gaming Monitor - See faster. Aim sharper. With native 1000hz at Full HD, experience ultra-fast gameplay with sharp detailed visuals that make every esports moment smoother, cleaner, and more precise.
- What Makes Native 1000Hz on Full HD Different? - Unlike HD 1000Hz displays that trade clarity for speed, the 25G590B delivers native 1000Hz performance with Full HD—the esports standard. Get the speed competitive players demand with the visual precision needed to stay locked in on the action.
- The Advantage of 1000Hz Gaming - Native 1000Hz delivers up to 1000 visual updates per second, helping improve target tracking and motion clarity during high-speed competitive play. From flick shots to precision micro-adjustments, every movement feels more responsive and controlled.
- Up to 1100Hz Overclocked Speed - Unlock up to 1100Hz overclock (O/C) for even smoother motion, faster responsiveness, and enhanced target tracking. Designed to help competitive players stay focused and react faster during the most demanding esports moments.
- Less Blur. More Control with MBR Pro. - MBR Pro helps reduce motion blur during fast-paced gameplay, making moving objects appear sharper and easier to track. Stay focused on targets with improved motion clarity designed for competitive esports performance.
Actual frame rate depends on the game and the whole system. LG identifies CPU, GPU, memory, game-specific frame-rate limits, operating-system version, and graphics-driver version as factors. The available manufacturer information does not establish a universal CPU model or RAM capacity for sustaining 1000 FPS across games, so a hardware upgrade should be based on benchmarks for the specific game and settings you care about—not the monitor’s refresh-rate number alone.
How to select and verify the refresh rate in Windows 11
- Open Settings > System > Display > Advanced display.
- If more than one display is connected, choose the 1000Hz monitor.
- Select a listed refresh rate and check the displayed resolution and refresh rate. Available options depend on the display and connection.
- If a rate has an asterisk, Microsoft says it does not support the current resolution; selecting it changes the display resolution to achieve that rate. Confirm that the desired resolution remains active after making a selection.
These steps and the asterisk warning are documented by Microsoft Support. For the 25G590B-B, also confirm that the DisplayPort 2.1 path and graphics card meet LG’s stated requirements.
Rank #2
- Quality Visuals: The XV273U 27" IPS monitor with 2560 x 1440 WQHD resolution in a 16:9 aspect ratio presents stunning, high-quality images with excellent detail. The zero-frame design does away with the thick frames found on conventional monitors freeing up precious screen space, so you have more to look at from edge to edge.
- AMD FreeSync Premium Technology: Say “goodbye” to stuttering and tearing. With AMD FreeSync Premium, the monitor’s frames are synced with the graphics card’s frames, which eliminates screen tearing and provides the smoothest gaming experience.
- Up to 1000Hz Refresh Rate: With a crisp WQHD (2560 x 1440) resolution, a smooth 540Hz refresh rate, and support from AMD FreeSync Premium technology, the Nitro XV273U is sure to deliver flawless gameplay. Gamers can also choose a higher refresh rate option with a HD resolution at 1000Hz based on the demands of the game and the task at hand thanks to DFR technology.
- Goodbye Ghosting: With up to a 0.5ms GTG response time and VRB Pro, the XV273U Gaming Monitor eliminates smearing and ghosting. Fast-moving action and dramatic transitions are rendered smoothly with enhanced motion clarity and sharpness.
- Brilliant Colors: Boasting a DCI-P3 95% color gamut, Delta E<2 and VESA DisplayHDR 600, vibrant colors leap from the screen. Revel in the finest visuals your games can deliver!
Account for variable refresh and overclock trade-offs
A monitor’s maximum fixed refresh rate and its variable-refresh features are not necessarily available in the same way in every mode. AMD explains that FreeSync synchronizes a compatible display’s refresh with the graphics card’s frame rate, and that some display presets or custom settings can disable FreeSync. Check the monitor’s supported range and recommended settings if you intend to use variable refresh rate; AMD’s FreeSync guidance describes the feature and preset caveat.
On the 25G590B-B, LG says the 1100Hz overclocked mode does not support AMD FreeSync Premium and is certified only for NVIDIA G-SYNC compatibility at 1000Hz. LG also says its MBR Pro blur-reduction setting disables FreeSync Premium and G-SYNC compatibility. Those are model-specific trade-offs, so check the feature combination you plan to use rather than assuming all synchronization and blur-reduction options work at the maximum rate. LG’s product announcement provides these mode qualifications.
Quick Recap
Best Value
- 27" QHD DISPLAY: Immerse yourself in stunning visuals with a 27-inch QHD (2560x1440) resolution, delivering crisp detail and vibrant colors.
- 240Hz REFRESH RATE & 0.03ms RESPONSE TIME: Enjoy smooth, blur-free gameplay with a lightning-fast 240Hz refresh rate and ultra-low 0.03ms (GtG) response time.
- HDR400 TRUE BLACK: Experience deeper blacks and brighter highlights with HDR400 True Black certification, enhancing contrast and visual realism.
- QD OLED TECHNOLOGY: Quantum Dot OLED panel ensures rich colors with 147.6% sRGB and 110.2% DCI-P3 color gamut coverage, providing stunning color accuracy
- ADAPTIVE-SYNC TECHNOLOGY: Eliminate screen tearing and stuttering with Adaptive-Sync compatibility, ensuring a seamless and fluid gaming experience.
Rank #4
- 27” 240Hz 1500R Curved FHD 1080P Gaming Monitor for Game Play.
- Prioritizes Gaming Performance: Up to 240Hz high refresh rate, more immersive 1500R Curvature, FreeSync, MPRT 1ms Response Time, Black Level adjustment(shadow booster), Game Modes Preset, Crosshair.
- Cinematic Color Accuracy: 130% sRGB & DCI-P3 95% color gamut, 4000:1 contrast ratio, 300nits brightness, HDR, Anti-flicker; Anti-Glare.
- Plug & Play Design: HDMI & DP1.4 & Audio Jack(No built-in speakers), durable metal stand, tilt -5°~15, VESA 100*100mm compatible.
- Warranty: Money-back and free replacement within 30 days, 1-year quality warranty and lifetime technical support. Pls contact SANSUI service support first if any product problem.
Rank #3
- 【Epic QD-OLED 500Hz Monitor】 A new generation of gaming monitor is emerging, this new 27 Inch 1440p 500hz monitor adopts QD - OLED panel and deliver 99% DCI-P3 color gamut, 1,500,000:1 contrast ratio, 1.07B(10 bit) colors, more detailed quality picture and a lifelike gaming experience.
- 【Rare 500Hz Refresh Rate & 0.03ms】INNOCN 2780M - Ultra-fast 500Hz OLED display. The faster speed lets you respond quickly to opponents and stay a step ahead of the competition. VRR Supported. Support 48Hz~500Hz(240hz/360hz/480hz etc)
- 【Powerful Connectivity】 2780M 2560 x 1440p 500hz gaming monitor delivers powerful connectivity: 2 x DP, 2 x HDMI, 1 x 3.5MM Audio Jack, wide compatible with laptop, Mac, Mini PC, Phones, Tablets, Gaming Console( like Switch, PS5/4/3, XBOX Series etc) . It's much more convenient.
- 【Support MAC-VIEW Modes】Allows adjustment via OSD to optimize Mac visuals, maximize the MAC color matching and reduce color unevenness, If connect a Mac device, this monitor will be the best assistant to extend the screen
- 【Adaptive-Sync & G-SYNC Compatible】This OLED 27 inch 500Hz computer gaming monitor with G-SYNC compatibility for a tear-free experience & low latency, immersive in the gaming world, designed for FPS / RTS. Compatible with most of graphic cards and games
Check these details before upgrading
- Confirm the exact monitor model and the resolution supported at its maximum refresh rate.
- Match the GPU output, cable, and monitor input to the manufacturer’s required connection.
- Distinguish enabling the monitor’s maximum refresh setting from targeting a particular FPS in a named game.
- Check which FreeSync or G-SYNC features remain available in the mode you want, including any overclocked or blur-reduction mode.
- After setup, verify the selected monitor, resolution, and refresh rate in Windows Advanced display settings.
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