It's got a faster processor and a stronger one so performence will be massive to the packardbell, 2GB of memory which i would say is the amount you need these days.
My experiences have led me to vow never to get a brand name PC again and that includes Toshiba and Sony that I've worked on.
My last 3 PCs have all been made to a spec by the nice people at BigPockets. Their site is online. I tend to just buy the actual station and get a monitor upgrade at a later time. The keyboard and mouse cost as little as a tenner.
If you are determined to get a brand name have a look at Acer. They make my laptop and daughters netbook and have yet to not please.