Is it ok to output to GPIO at full speed 24/7

[solar3000]

Is it ok to output to GPIO at full speed 24/7?
Whatever it may be, a clock, a display, light switches, etc...

[Gert van Loo]

Of course it is!
(Unless you mean 24V and 7Amps then it is not... )

If you take the SDRAM interface it is running 24/7 at 400 MHz.

[solar3000]

I had a corrupted SD card right after running the GPIO for a week. So I was looking for clues.
I know in sh it writes to /sys and I know sys is not a real filesystem.