The three processor technologies that are required to be able to install windoes 8 are NX, PAE and SSE2. PAE stands for physical address extension, NX would NoeXecute and SSE2 means Streaming SIMD Extentions 2. The PAE is the one that enables 32bit processors to be able to access 4 GB and above of memory. NX would help guard the computer from malwares. Lastly, SSE2 is a set of instructions that is used by third party drivers and apps.