I think what you need is your computer memory ram, nothing else

the process could be running at 2000 if you are proposing, because you can achieve something with this mobo, but the problem that your pc is to go slow requirements for Windows XP and the hardware configuration you have!
Windows xp minimum requirements to run with 128 MB memory, 256 to run stable and then putting whatever we want, but if you force a 256 mb jar, you will most likely be delayed a little but what is normal, I was touched fix several pcs with 256 memory and newly installed windows, are more or less since Windows XP only occupies 220 memory resources, which is enough and begins to work on virtual memory so it does not a memory dump.
I recommend that you get more memory, but succeed as a little Overclocked the processor, the memos have to frequency. Which make them more sluggish then stays where it!
Greetings