The max GHz on the 750 is slightly higher, but there's no way you'll be able to tell a difference between 1.86 (750) & 1.73 (740). That's only a 7.5% bump in max cycles and all PentMs have Speedstep, so they rarely operate at their max.
I'm seriously considering buying a laptop, but I'm still not sure which one. One has an Intel Pentium M 750 processor, the other one an Intel Pentium M 740. I know that the 750 is faster, but TO WHAT EXTENT? How big is the difference between these 2 processors, considering performance/speed/etc? Thanks, I appreciate your help.