DELL DIMESION E520 HDD UPGRADE

Hi I am currently in the process of buying a new pc but my current pc( DELL DIMENSION E520) needs a new HDD does anyone know whether  the HDD I am purchasing would work in this PC while I save up to buy all the components for my new one? The HDD in question is:

http://www.samsung.com/global/business/hdd/productmodel.do?group=72&type=94&subtype=98&subSubType=129&model_cd=560
 

Thanks