CPU upgrade

I´m running video editing software on my somewhat dinosaur of a computer, Fujitsu Siemens Scaleo 600 p.
I have upgraded pretty much all I can except the CPU, which is a P 4 2.53Ghz. 478 socket
The system is not able to handle the footage from my EX3 XDCAMEX..........(very juttery playback)
My question is, what options do I have as far as upgrading the CPU is concerned, what will the motherboard be able to handle?

I know that the best option is to get a new computer with more power, but I pretty much need a quick fix for the DINO, while I scrounge the cash together for a new setup

any ideas?

thanks
k

in most cases you are not able to upgrade an OEM computer like the Fujitsu. one can test it, but there´s no guarantee that it will work

the problem is : if you don´t know the processor compatibility list of your motherboard, the new CPU maybe won´t work

by the way the fastest socket 478 CPU that you can buy new is a pentium 4 3 Ghz. other possibility would be a second-hand processor. but as I say, you don´t know if it works