Pixel response times vs. overshoot @ 520 down to 60 Hz refresh rate
The PG27FFX2A advertises itself as an eSports monitor, so ASRock should now be setting off a veritable firework display of pixel response times. Hopefully ASRock has also thought about overshoot. A very good IPS panel can certainly achieve the 2 ms response time required for 520 Hz. But that won’t happen without a trade-off – or will it? Let’s find out…
OD off
OD Normal
OD Enhance
Let’s start with the obvious, with the Overdrive Enhance you don’t even have to try to play, because you get inverse ghosting until it burns your eyes. Unplayable! It’s interesting that even with Enhance you can’t get below the 2 ms response time on average. With the OD Normal, ASRock tries to create a better ratio between response time and overshoot. Unfortunately, this doesn’t really work either, because with OD Normal there is sometimes well over 300 percent overshoot (inverse ghosting). The fact that ASRock has implemented varibale overdrive from 240 Hz doesn’t really help either.

ASRock sets OD off in the factory settings and certainly for good reason. Yes, it doesn’t look pretty, but in my opinion it’s the best the PG27FFX2A has to offer. Ultimately, even with OD off, it’s a rollercoaster of emotions, because you always get a mixture of ghosting and inverse ghosting. The good thing is that it is only noticeable to a limited extent at high refresh rates. Ghosting (response time too slow) at 240 Hz is less noticeable than inverse ghosting (overshoot) at 300 Hz. This leaves the user – in my opinion – with only the OD off. This overdrive is usable, even if the measurements say otherwise at first glance.
ASRock has always endeavored to meet the requirements here. It would probably have been better to use a TN panel here, even if you then have disadvantages elsewhere. (Viewing angle, color volume, etc.) In my opinion, ASRock could have done even more with the IPS panel. With better tweaking, the PG27FFX2A could certainly achieve even better response times with less overshoot. Under no circumstances can this monitor keep up with a 480 Hz OLED. Especially as ASRock has not given the PG27FFX2A any backlight strobing on its journey.
- 1 - Introduction, Features and Specs
- 2 - Workmanship and Details
- 3 - How we measure: Equipment and Methods
- 4 - Pixel Response Times
- 5 - Display Latencies
- 6 - Color-Performance @ Default Settings
- 7 - Direct Comparison and Power Consumption
- 8 - Color-Performance calibrated
- 9 - HDR-Performance
- 10 - Summary and Conclusion















































































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