They also have features friendly to businesspeople, such as TPM chips, matte (anti-glare) displays, RAID SSDs, and extended sheet batteries, as well as continuing to include RJ-45 and VGA (D-Sub) connections.
Unlike the SR, the new VAIO S Series had a mini-PCI slot that allowed for an optional internal WWAN (mobile broadband) adapter.
The processors were updated to Second-Generation Intel Core i5 and i7 CPUs, and the graphic options were either AMD Radeon HD 6470M (512 MB DDR3) or 6630M (1 GB DDR3).
The laptop also featured a physical switch that could disable or enable the discrete graphics card at will and make the computer use the integrated processor GPU to increase battery life.
[citation needed] In August 2011, Sony introduced the SE model as a larger variant of the existing S Series notebook.
Its hardware was otherwise identical to the 13.3" S Series, with an optional Blu-ray Disc drive and up to an Intel Core i7-2640M CPU and AMD Radeon HD 6630M GPU.
The S13 followed the basic model of the previous generation with a 13.3" screen at a native resolution of 1366x768, and retained the same overall angular design and backlit chiclet keyboard.
For the graphics options, Sony switched from AMD back to NVIDIA with the GeForce GT 640M LE with 1 GB DDR3 dedicated video RAM.
The S13 Premium was constructed of carbon fiber (as opposed to the magnesium casing of the standard S13) and as such was slightly thinner (0.90") and lighter (3.69 lbs).
The S15 was the larger variant in the 4th VAIO S Series, with (like its predecessor, the SE) a 15.5" IPS Panel with a matte finish and a 1920x1080 native resolution.
The graphics card was the same GeForce GT 640M LE found in the 13.3" models, and like the S13 Premium, the S15 had an option to upgrade to 2 GB of dedicated video RAM.