The CPU cycles will be what ever you have them set at, regardless of the host machine, but the upper limit of DOSBox CPU cycles that you can use before you start having troubles, such as stuttering sound, etc. will vary according to the host machine that it is being run on. An older, slower box will choke on fewer cycles than a newer, faster machine. Other factors can also influence this. I dual boot regular 32 bit Windows XP and the beta of 64 bit Windows XP. Running one game I have in DOSBox in 32 bit Windows uses about 45% of my real CPU’s cycles, while running the same game with the exact same settings for DOSBox in 64 bit Windows uses 15%. If your computer can’t handle the cycles that a game might demand, then you will need to try other things, such as adding some frame skips.