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The main differences among the various series of VAIO laptops from Sony are those concerning chipset, video RAM, form factor and the version of Windows that is included. For instance the low-end VAIO E series laptops offer a choice of either Intel Core i3 or Core i5 dual core processors or AMD Athlon II (2.1GHz) dual core or Phenom II triple core CPUs. Almost all models in this series come with a 320GB hard disk drive and 3GB to 6GB of RAM; all are expandable up to 8GB.
As a result, they’re all preinstalled with Windows 7 Premium Home Edition 64-bit to take advantage of this amount of system RAM. The cheapest model is the AMD Athlon II system, which features a decent ATI Mobility Radeon HD 4250 with 512MB of video memory assigned, while the Sony VAIO E Series Core i5 model features the ATI Mobility Radeon HD 5470 with 1GB video RAM.
All E Series devices have the usual wireless LAN, Ethernet connectors, card readers, stereo speaker options and Bluetooth, although the entry-level device omits Bluetooth. All Sony VAIO E Series laptops are available for under $1000.