Never overclocked before, need more CPU power from these machines, help please!

[TheBigCheese]

Hi everyone

*looks around*, first time I've been in here!

I'm doing some video encoding work...lots of it actually and I need to up the encoding speed of some of my older PCs.

There are three machines with very similiar specs that I just need more processing power for encoding on the CPU, they aren't for gaming, just video encoding.

Can anyone tell me what I should do to get some extra power out of them?

Thanks!


These are the specs (ABC, LM & RM are just to identify each machine):

 

[TheBigCheese]

Thanks very much for your reply!

They are all Corsair 450W VX PSUs.

Wow that sounds fairly easly but longwinded!

I'll give it a go and report back!