Hii guys i am planning to buy a new harddisk and the sales man in the shop told me that i can put my old 160 gb HDD and the new 500 gb harddisk together i want to know that if putting this together will make the computer laggy ?? and i also need to know that is Foxconn H61 gud ?? am planning to install i3 processor and also 1 gb graphics card of asus please i need help fast.............