85 Hz on old/new driver looks the same like 75 Hz on previous one?

85 Hz on old/new driver looks the same like 75 Hz on previous one?

I have old philips 107T5 CRT and Nvidia graphics card. I used old Nvidia driver (but it wasn't 'legacy' one when I installed it) for few years but recently I decided to install other Linux distribution. I used 75 Hz refresh rate and 1024x768 resolution on my previous distribution.