Limited to 144hz on my 240hz AOC Agon 251fz

vestrong · 18 Jul 2017 at 14:45

Hi there. Yesterday I brought home the 240hz monitor from AOC - the Agon 251fz. For me, the overall experience with this monitor is great, except for one little detail.. I'm stuck at 144hz. I'm using the DisplayPort 1.2 cable that came with the monitor, and I can't go above 144hz. I'm out of ideas.. I'm writing this in the hope, that one of you clever minds on here, might know something about this issue. I'm speculating that my GTX might be outdated - I hope not.

NVIDIA Control panel: https://gyazo.com/b20dee040221bf53f1726a40ceacf139

Windows 10 monitor properties: https://gyazo.com/3f9e7649f4b6693f093ed1f211e22e2c

My pc:

ASUS ROG Strix z270f
Intel i7-7700k
Corsair H100i
MSI GeForce GTX 770 Gaming 2GB PhysX Twin Frozr IV
Samsung EVO 850 250gb
Corsair Vengeance LED 3200mhz ddr4 cl16

sadbuttrue · 18 Jul 2017 at 15:59

Latest nVidia drivers?
Many older cards can't do 240hz, but a number of GTX770s can. Not sure about yours however.

Danny75 · 18 Jul 2017 at 16:20

Did the monitor come with a CD/DVD? And did you update using the driver on it?

From Page 41 of the manual:

Select the "xxx.inf" file and click the "Open"button. Click the "OK"button.
• Select your monitor model and click the "Next"button. The files will be copied from the CD to your hard disk drive.
• Close all open windows and remove the CD.
• Restart the system. The system will automatically select the maximum refresh rate

vestrong · 18 Jul 2017 at 16:48

I installed the .inf file but I still can't surpass 144hz. Thank you so much for helping out. This is what i looks like trying to change to 240hz after installing the .inf file: https://gyazo.com/239fcf0c5ee6f1e029a02917b7c3e71e

HoneyBadger · 18 Jul 2017 at 17:01

I'd be very surprised if your 770 could do 240mhz. I think that's your issue.

Danny75 · 18 Jul 2017 at 17:03

It's looking that way.

Have you tried manually overclocking to 240Hz through Nvidia Control Panel?

HoneyBadger · 18 Jul 2017 at 17:14

Pages 14 and 15 of the monitors manual seem to imply your 770 isn't up to it I'm afraid.

Phixsator · 18 Jul 2017 at 17:51

You need something newer gen but it certainly does not have to be latest gen. Too bad anything AMD is sold out or to expensive to make sense, that freesync would have been nice to take advantage off.