When it comes to monitors, response time is one of the most overhyped and least understood specs. Most monitors advertise a 1ms response time, but that figure reflects ideal test conditions rather than the real world. OLED gaming monitors are fundamentally different. Their sub-1ms speeds come from how the pixels physically switch, not from how the spec is measured. Read on to see how true OLED response times translate to on-screen performance, how they eliminate motion artifacts and how to determine if this technology is right for your gaming setup. Monitor Response Time at a Glance Display Technology Marketed Response Time Real-World Performance Physical Mechanism Motion Artifacts Traditional LED/LCD 1ms 2-5ms (typical) Liquid crystals physically rotate to change states Ghosting and trailing visible in fast or high-contrast scenes ViewSonic QD-OLED Sub-1ms 0.03ms GTG Quantum Dot layer over self-emissive OLED pixels Virtually none What Response Time Actually Measures At its core, response time is just the time it takes a single pixel to change from one color to the next. That number matters because slow-switching pixels leave behind a faint trace of where they just were. Regular users won’t notice this delay with static content like articles or desktop apps. But in a fast game with rapid camera movement, that lag shows up as blur, trailing or ghosting on moving objects. GTG, MPRT and BTW Explained Three separate metrics get grouped under the response time label, and each one measures something different: Gray-to-Gray (GTG): This tracks how long a pixel takes to shift between two shades of gray. It’s the standard metric you’ll see on almost every spec sheet. However, testing methods aren’t standardized. Brands often pick their own shades of gray and overdrive profiles for lab tests. Because of this, two monitors can both claim a “1ms GTG” and still show completely different levels of ghosting and trailing during actual gameplay. Moving Picture Response Time (MPRT): Instead of timing how fast a pixel switches colors, MPRT measures how long a pixel remains visible before the screen updates. If you want to gauge the exact amount of motion blur you’ll experience while gaming, this is the most accurate metric to check. Black-to-White (BTW): This measures the transition time from a completely turned-off pixel to maximum brightness. It’s a less common metric and brands rarely feature it prominently. That is because it only measures a single extreme transition, rather than the varied color shifts that actually happen when you play. GTG is still the baseline number most buyers end up comparing. Why OLED Achieves True Sub-1ms Response Times Response time comes down to how each technology builds an image on your screen. OLED and LED take very different approaches, and each one has its own way of handling speed. How LED Response Times Work Traditional LED and LCD monitors operate by firing a powerful backlight through a layer of liquid crystals. Because those crystals must physically rotate to block or pass light, this mechanical process creates an inherent hardware limitation. Voltage overdrive can push the rated GTG number lower, but real-world response times typically land between 2ms and 5ms. How OLED Pixels Work OLED panels operate without a traditional backlight or a layer of twisting liquid crystals. Because color changes rely entirely on adjusting electrical voltage rather than moving physical matter, pixel transitions happen almost instantly. That’s how OLED gaming monitors hit true ultra-low response times in real gameplay instead of only under best-case test conditions. How Response Time Affects Gaming Performance To understand why pixel speed matters, you have to look at how it interacts with your monitor’s refresh rate. Refresh rates count how many frames your screen displays per second, while response time dictates how fast the pixels can actually keep up with those changes. If your pixels switch colors slower than the screen updates, the images bleed into each other and ruin your view. Take a modern 240Hz esports monitor as an example. At 240Hz, the monitor draws a brand new frame every 4.17 milliseconds. If your individual pixels need 2 to 5ms to transition, they’re still catching up while the next frame is already hitting the screen. That performance overlap is where blur and ghosting come from. Motion Clarity and Target Tracking Fast camera movements really put a monitor’s response time to the test. When you whip your view around or snap your aim, every single pixel has to change color at the exact same time. If a screen is too slow, it lags behind. That’s why you get that annoying blurry smear and a trailing shadow behind moving objects. Because OLED pixels switch almost instantly, those fast pans stay perfectly sharp. Ghosting and Trailing Ghosting happens when your pixels can’t keep up with what’s happening in the game. It looks like a faint duplicate or a trailing shadow behind a moving object. You’ll often notice it most when something bright moves across a dark background. OLED screens switch fast enough to completely wipe out this issue. Traditional LED panels try to fix this trailing by pumping extra voltage into the pixels. But if you crank that setting too high, it can create inverse ghosting, which leaves a bright halo behind the object. Which Games Benefit the Most from a Sub-1ms Response Time? The advantages of a sub-1ms response time aren’t universal. They’re best used in fast-paced genres where a split second of screen blur can completely throw off your timing or cost you a match: Esports and competitive First Person Shooters (FPS): Games like Counter-Strike 2, Valorant and League of Legends require instant reaction times. Because the screen doesn’t blur when you whip your mouse around, you can spot hidden enemies faster and track moving targets without fighting a distorted image. Fighting games and fast action: Success in these titles comes down to reading micro-animations and executing tight counters. Total frame-by-frame clarity ensures you can see the exact moment an opponent starts a move, giving you a clean window to react. Racing simulators: High-speed driving titles demand extreme spatial precision. Near-instant response times help keep racetrack boundaries and distance markers clear, letting you hit exact braking zones instead of guessing through a blur of pixels. Do You Actually Need a Sub-1ms Response Time? A sub-1ms response time isn’t a mandatory upgrade for everyone. Whether it’s worth your money depends entirely on the hardware you’re upgrading from and the specific games you play. You’ll likely notice the upgrade if: Competitive multiplayer games dominate your library: Regular sessions in fast-paced shooters or fighting games make pixel lag incredibly obvious. You already use a high-refresh rate monitor: Gaming at 144Hz, 240Hz or higher shrinks the frame window, which makes slow pixel responses much easier to spot. Your current screen suffers from ghosting: Distracting trails or blurry halos are actively ruining your favorite high-speed games. You want the absolute best motion clarity: You simply want the sharpest, most responsive image a modern monitor can provide. You might not see a meaningful difference if: Your games run at a slower pace: Single-player RPGs, simulation titles and turn-based strategy games don’t push pixels fast enough for the extra speed to matter. You own a premium, high-speed IPS monitor: High-performance IPS screens do a great job of limiting trailing on their own. While moving to OLED still gives you an immense boost in overall visuals, the change in actual pixel responsiveness will be less obvious if your current monitor is already incredibly fast. Your current monitor works perfectly fine: Your current monitor hasn’t shown any visual artifacts or lag that actively bother you during gameplay. ViewSonic OLED Gaming Monitors Looking for an OLED gaming monitor? Check out this next-generation option from ViewSonic. VX2738-2K-OLED The VX2738-2K-OLED gaming monitor is the ultimate value option for gamers wanting to experience the incredible contrast and color depth of QD-OLED technology. It matches a smooth 240Hz refresh rate and a swift 0.03ms GTG response time with an integrated Quantum Dot layer that delivers true 10-bit color and 98% DCI-P3 coverage. This OLED monitor is fully console-ready with dual HDMI 2.1 inputs and features automatic background protections like intelligent pixel shifting to protect against burn-in. Shop the VX2738-2K-OLED Gaming Monitor Frequently Asked Questions What is a sub-1ms response time on a gaming monitor? It means the pixels can transition between colors in under one millisecond. On OLED monitors, real-world response times typically sit between 0.03ms and 0.1ms. That range comes from the way OLED pixels switch, without the physical movement that liquid crystal panels rely on. How does OLED response time compare to LED? OLED response times are faster than LED because of how each screen builds an image. Traditional LED monitors rely on liquid crystals that physically rotate to shift colors. It’s a proven system that works incredibly well for high-refresh gaming. OLED panels are different because their pixels are self-emissive, meaning they react to electrical signals for near-instant transitions. LED is a fantastic, reliable choice for most players, but OLED’s unique design simply removes the physical transition step to push response speeds even lower. What is GTG response time and why does it matter? GTG stands for Gray-to-Gray. It measures how quickly a pixel shifts between two different shades of gray, making it the most common metric for on-screen speed. Testing methodologies aren’t standardized across the industry, though, so GTG numbers from different brands aren’t always a direct apples-to-apples comparison. Does ghosting happen on OLED monitors? Virtually never. Ghosting occurs when pixels can’t transition fast enough to keep up with on-screen action, resulting in a faint trail behind moving objects. Because OLED pixels switch almost instantaneously, these distracting trailing artifacts are effectively eliminated from your gameplay. Do I need an OLED monitor if I already have a 240Hz monitor? It depends on your current setup. If you already own a premium, high-performance IPS monitor with no visible ghosting, the visual upgrade will be relatively subtle for slower games. But if you play fast-paced competitive titles where motion clarity is everything, pairing a 240Hz refresh rate with true sub-1ms OLED speeds delivers a noticeably sharper image. Ready to see the difference? Click here to check out ViewSonic’s OLED gaming monitors. Was this article helpful?YesNo TAGS Competitive Gamingdisplay technologygaming monitormonitor response timeOLED Gaming MonitorViewSonic Gaming monitorViewSonic OLED monitors SHARE