It depends... There are new Celerons which are "core" based, whereas all P4s are Netburst based unfortunatly. What socket does your motherboard have? So I can find out which Celerons it supports. In the meantime, this chart might help you: http://www.tomshardware.co.uk/charts/processors/xvid-1-1-2,403.html
You can add any other processors to the chart and compare them in different apps.