I have a few 80-85oz (i think) steppers that I use on my home built cnc machine. I am using a pc power supply for these motors at 12 volts. Will higher voltage allow the motors to spin faster without stalling? Ive seen some videos on this site and it appears these motors are spinning quite a bit faster than mine. Is this due to motor type or could more voltage be a fix for me?

Thanks all!