Compaq R4000 HDD max speed supported

Can anyone tell me what the max speed HDD I can install in a Compaq R4000 series laptop?

Is 7200RPM too fast Ihave a 5400 120GB in there now but it is getting too small and slow.

Iwould like to install 160GB 7200RPM.

Oh by the way it is PATA NOT SATA

Thanks in advance…