2420T vs 2430T

[dopey]

Hi folks, I recently bought a xl2430t after owning a 2420t for several years.
I was skeptic/afraid about buying it because of input lag rumors.
I couldn't get a 1:1 comparison, it would set one screen 144 and 120 or 60 and 120.
AMA settings have been changed and premium and high values are added now. (Yes I never tried out the g models before)
I recorded both screens with a camera, and the 2430t on 144hz wins most of the time with 10-20ms difference and better clarity.
How come they are even and then a few seconds later it's 10 or 20ms faster, and then the same again?

[Q83Ia7ta]

May be because this software is from 90s and suits better for 60Hz monitors.
Try http://www.testufo.com/#test=frameskipping and http://hardforum.com/showthread.php?t=1423433
Don't forget to reset all setting on minitor and set FPS1 mode. Also check with and without VSYNC.

[Falkentyne]

Make sure instant mode is enabled on the 2420T.
That's also not a current model. That's probably the old version. The current version was sold as the 2420TE here. Even the 2420TX was newer than the 2420T (not sure, about the difference but I think the 2420TE used a non PWM backlight while the TX had pwm)

[flood]

it's not a good way of precisely measuring input lag

maybe okay for tv's which can have 50ms of input lag and stuff...