My mom was cleaning the closet and found this old monitor box and the refresh rate is (I think) 75hz. But why didn't they use this more?
My mom was cleaning the closet and found this old monitor box and the refresh rate is (I think) 75hz. But why didn't they use this more?
11 Comments
The power grid in most of North America runs at 60 Hz.
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HDMI was designed with digital TV standards in mind. TV only went up to 1080p 60hz, so that was what the original bandwidth of HDMI supported and was adopted as the standard for HDMI monitors.
TV in NTSC is 29.97 Hz ever since color was introduced.
CRTs used to scan two fields, so practically 59.94 fields per second, interlaced…
Your eyes can only see 60fps, so the standard refresh rate is 60hz. 👍 /s
Edit: Added an /s to show: for comedic effect.
75 was necessary to lower the flicker with crts and to prevent headaches. No such problem with lcds, no flicker at any refresh rate and 60 was considered enough for smoothness.
60Hz/50Hz was chosen a long time ago to match the frequency of AC electricity during the B&W days, in NTSC land color TV was really 59.94Hz. Basic standard VGA is a close cousin of EDTV (reason why some 480p consoles could support VGA (Dreamcast and even Gamecube with modded cable)).
Higher refresh rates on CRT monitors were more commonly used to eliminate flicker caused by office style lighting (fluorescent) and eye fatigue, high frame rate gaming (60+ FPS) during the VGA days wasn’t really doable for most of us unless you were playing older games and/or at the lowest resolution and settings.
Probably because in the US almost every TV screen or monitor has been 60hz or 59hz so basically 60
https://preview.redd.it/x0kme238k2tc1.png?width=472&format=png&auto=webp&s=0c95a176523a082f25288440d9eaab7a060fe897
¯\_(ツ)_/¯
60hz on a crt monitor will look better than 120 on a modern panel. Get a $15 hdmi to vga adapter from scamazon you’re good to go. It won’t come close to matching the brightness though
Because 69 was taken