This mini tower features a powerful Core i5-4570 quad-core processor, which will deliver powerful performance for even demanding tasks. You're also getting a package that's ready for business, thanks to the pre-installed Windows 7 Professional, and a 3-year warranty with onsite service after remote diagnosis. If at any point you'd rather be running Windows 8, it includes media for Win 8 Home & Professional too, giving you choices down the road.