I'm not at all an expert on desktop hardware, so thought I'd throw this out to you guys...
We have several, fairly old, Compaq EN-series Deskpros here. CPU is about 500 Mhz and RAM is 125Mb. They have about 10 GB hard drives.
They're all running Windows XP, Office 2003 pretty slowly, although it is manageable.
We were contemplating throwing these away and getting new machines altogether, but I'd like to boost their power and save them.
I guess I could add more RAM, but is there anything I could do to boost the CPU power? Is it possible to buy new CPU chips and, if so, how much do they normally cost (I'm in the UK)?