Which is a better Computer to buy at a 800$ budget?

The Acer would be the better computer. Expecially if you put a little money into a graphics card. The Quad Core processor and the additional 1GB of memory makes it worth it. Then on top of that it comes with a 64Bit version of windows which also helps when it comes time to Upgrade your RAM. The Larger hard drive is also in the Acer....really the HP has nothing on this Acer...