Response time is fix or can increase?

[dargelot]

Hello guys!

 

Im looking for 144Hz monitor but im a bit confused with the basics.

Response time, gtg, gray to gray. Many name, but still dont know, it is true data?

If i choose a game monitor, (for now panel type donsent matter) and the response time is 1ms it mean the monitor is can refresh the image every ms. It can change the color of the pixel in 1ms to an another color. Ok got it. But as i read more and more i just realize, gray to gray is just the fastest method to change color. If i choose blue to green it can be more ms to that monitor, dosent matter it can 1ms gtg.

So if i find a monitor what 80% response time or 100% response time is quite low, it means it can 144hz with no problem?

What if its 100% response time is 6,5ms? It never can increase?

To achive 144 frame per sec the response time must be lower then 6,9ms (1000/144). So 100% response time is the maximum ms what the monitor do? Nothing, gsync, freesync or any filter, monitor in build mode

, or any software wont  increase this number?

If no i just need to find the lowest 100% response time monitor and im fine. Im right?

 

-dargelot

[SolarNova]

@dargelot

 

Take manufacturer response time specs with a massive grain of salt, they are very misleading.

You could grab 10 different monitors all with 1ms response time specs, and their 'real' response time will be far different between each monitor.

 

At most take the specs as a very very rough guide.

 

if you want to compare monitors, refer to review sites like rtings.com and tftcentral.co.uk. They use different testing methodologies so take that into consideration, they explain their testing on their sites.

 

ideally u want a 100% MAXIMUM (not average) response time no higher than about half that of the frame time of the monitor. So 144hz is 6.9ms frame time, ideally u want a maximum pixel response time of no higher than roughly 3.45ms. That way the pixel is spending half the time transitioning and the other half at the target color.

 

In practice u wont find many monitors that can achieve this. Those that do will likely be TN monitors with terrible picture quality.

 

Overdrive can be used to speed up pixel response time if the monitor has overdrive as a feature (some manufacturers have different names for it) ..however...

You also want to ensure u dont have overshoot caused by overdrive, that results in inverse ghosting, as many displays use high overdrive settings during testing to achieve their fastest response time of 1ms or lower for advertising purposes, however u  would never want to run a monitor with max overdrive, in those cases,  as it looks terrible.

[SpookyCitrus]

Honestly for me when I see a monitor I'm interested in I just look for reviews on YouTube from reputable reviewers. 

[Untitled]

In summary

 

1. Response time value that shows on Monitor's spec is usually GTG. which is an inaccurate way to measure response time because average response time is a lot higher than GTG.

 

2. Having too slow response time will cause "ghosting effect" because pixels don't have enough time to change itself along with monitor frame rate.

 

3. The easiest way to guess the response time is to look at panel type. In term of response time speed: TN > IPS > VA. TN is the fastest panel and it rarely has problem with ghosting effect. meanwhile VA is the slowest. even the VA monitor spec say 1ms on GTG, but VA average response time usually more than 10ms.

 

4. Higher refresh rate monitor also need faster response time. For 60Hz monitor, any type of panel is fine. For 144Hz, VA seems to have a little bit of ghosting effect. For 240Hz, only TN can make it without ghosting problem.

 

5. Response time can be reduced, some monitor like mine, come with MPRT feature. which improve response time on VA panel (it actually work).

 

 

[dargelot]

Thanks all the anserws. Now im way more informant in this topic.