Only inconvenient may be not having the latest virtualization support.
In case people are not aware of how cheap you can buy: with AMD CPUs and chipsets, one can re-fit very nicely an existing case for less than $200 - an $80 motherboard (with capable ATI integrated video), a $60 CPU (dual 64 bit cores, 2.7+ GHz) and $50 of RAM (4GB DDR2/800MHz).