There are Xeons with between 1 and 6 cores and CPU's with that kind of speed.
Per wikipedia, the Quadro FX 540 is based on the NV43 chip which came out in 2004, so it wouldn't surprise me if your system is a bit dated...in my opinion, it's clearly short on RAM.
Your notebook appears to have better spec, as will just about any PC in the $400 and up price range.