Enter your panel specs
Set your actual operating refresh rate (not the panel's maximum), the gray-to-gray response time from your monitor's spec sheet or a review source, and your overdrive overshoot level if known from a review.
Free, privacy-first
Refresh Rate Response Time Checker
Evaluate refresh rate and response time together, not as isolated specs, to understand real motion clarity and overdrive risk.
Input values
Results
Results update as you use the interface above.
How to Evaluate Your Monitor's Motion Quality
Use this flow when comparing overdrive modes, considering a higher refresh rate monitor, or trying to understand why motion still looks blurry after an upgrade.
Set your target FPS
If you typically render 180 FPS on a 240 Hz monitor, enter 180. The frame budget that matters for motion quality is determined by your actual frame output, not the panel's maximum Hz.
Read response utilization
Values above 80% indicate the panel struggles to keep up at this refresh rate. If utilization is high and overshoot is also elevated, the panel may be pushing aggressive overdrive to hit a low response time at the cost of inverse ghosting.
Compare overdrive modes
Run the scenario with different overshoot values representing your monitor's available overdrive modes: for example, 5% overshoot for Normal and 15% for Fast. This shows the clarity versus inverse ghosting trade-off before you change settings in the OSD.
Evaluate a refresh rate upgrade
Enter your current refresh rate with your existing response time, then change to a higher Hz value. The tool shows whether the same panel response provides meaningfully better clarity at the higher rate, or whether you would also need a faster-responding panel to see a real improvement.
Frequently Asked Questions
What does response utilization mean?
It is the gray-to-gray response time divided by the frame budget (1000 / refresh rate in ms). A lower percentage means the panel completes pixel transitions with more time to spare before the next frame. Values below 50% give good motion clarity headroom; above 80%, ghosting becomes likely.
Why include overshoot?
Aggressive overdrive reduces measured response time but introduces inverse ghosting: pixels overshoot their target color and create a bright artifact trailing fast movement. This trade-off is invisible in GTG spec numbers but visible in actual gameplay. Including overshoot level in the model gives a more complete picture of motion quality.
Can this predict exact monitor rankings?
No. It is a comparative heuristic for scenario planning, not a lab-grade benchmark replacement. Two panels with identical spec inputs can perform differently due to firmware behavior, temperature effects, and panel-specific pixel response characteristics. Use this tool to compare directions, then verify with real reviews.
Does target FPS affect the result?
Yes. If your target FPS is well below the panel's refresh rate, the effective frame budget per output frame increases, and response utilization drops accordingly. A monitor with 4 ms response time at 240 Hz may be much more comfortable if you only achieve 120 FPS, because the relevant budget is now 8.3 ms.
How should I use the comparison table?
Use it to see how the same panel response time behaves across common refresh tiers, 60, 144, 240, and 360 Hz, before changing monitor settings or upgrading. It shows whether a refresh rate upgrade would change the clarity tier for your current response time.