Hi,
There are many things and the first thing: you can't compare oranges with apples. Laptops and Desktops do not use same specs. Same generation components, laptops will always run slower than desktops. Interesting, the following link does not show CPU:
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&docname=c03675298
Regards.