First S series

The VAIO S series was a line of notebook computers from Sony

Sony

, commonly referred to as Sony, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan and the world's fifth largest media conglomerate measured by revenues....

 introduced in Summer 2004. The screen was a Hitachi 13.3" 16:10 aspect 1280x800 model.

It was a Centrino laptop, with Intel Pentium M CPU, and ATI Mobility Radeon 9200 or 9700 graphics.

The weight of the device was 1.89kg, and it was replaced in 2006 by the SZ series.

Second S series

The VAIO S series is also a line of notebook computers from Sony introduced in January 2011 to replace the SR series

Sony VAIO SR series

The VAIO SR series was a line of consumer-grade notebook computers from Sony introduced in July/August 2008 to replace the Sony VAIO C series range , as a part of the Intel Centrino 2 launch...

. Like the SR, the S is a consumer-grade laptop with 13.3" screen, however the aspect ratio is now 16:9 1600x900 rather than 16:10 1280x800, the CPU is Core i3, i5 or i7 rather than Core 2 Duo, the RAM is DDR3 rather than DDR2, and the GPU options are updated to Intel HD or Nvidia 310M. As with the SR, the S has optional Blu-ray drive. Unlike the SR, WWAN capability is optional on the S. http://presscentre.sony.eu/Content/Detail.aspx?ReleaseID=5461&NewsAreaID=2&ClientID=1

The S series competes with the 13.1" premium-priced Sony VAIO Z series

Sony VAIO Z series

Sony has used the Z model moniker for its high-end ultraportable notebook computers since 2000. Unlike other Sony models, the Z has always been manufactured in Japan....

. The S series is Sony's attempt at reducing the price of its laptops to offer comparable products to Apple.

SE Series

The new VAIO SE series was introduced in late August to October. It features a bigger 15.5 HD screen and 1920x1080 resolution.