Possibly, depends on the specific motherboard model and which Pentium 4 processor you want to use.
right now my pc is using Pentium 4 1.5GHz/400Mhz 478 pin
and i'm thinking to upgrade it to Pentium 4 3.0GHz/800Mhz 478 pin
will 3.0GHz run properly? because according to BIOS info my current processor is 1500MHZ/400MHZ FSB and RAM speed is 133MHZ