Amazon Kindle Paperwhite - Specifications

Brand name of the company that manufactures the device.

Model name of the device.

Аlternative names, under which the model is known.

Information about the width, i.e. the horizontal side of the device when it is used in its standard orientation.

Information about the height, i.e. the vertical side of the device when it is used in its standard orientation.

Information about the thickness/depth of the device in different measurement units.

Information about the weight of the device in different measurement units.

Estimated volume of the device, calculated from the dimensions provided by the manufacturer. Applies for devices in the form of a rectangular parallelepiped.

Information about the colors, in which the device is available in the market.

Materials used in the fabrication of the device's body.

The SoC integrates different hardware components such as the CPU, GPU, memory, peripherals, interfaces, etc., as well as software for their functioning.

Information about the process technology used in manufacturing the chip. The value in nanometers represents half the distance between elements that make up the CPU.

CPU is the Central Processing Unit or the processor of a mobile device. Its main function is to interpret and execute instructions contained in software applications.

The CPU bits are determined by the bit-size of the processor registers, address buses and data buses. 64-bit CPUs provide better performance than 32-bit ones, which on their part perform better than 16-bit processors.

The instruction set architecture (ISA) is a set of commands used by the software to manage the CPU's work. Information about the set of instructions the processor can execute.

The cache memory is used by the processor in order to shorten the time needed to access data and instructions that a frequently used. The L1 (level 1) cache memory has a small volume, but operates faster than the RAM and the rest cache memory levels. If the processor does not find the data needed in L1, it continues to look for it in the L2 cache memory. In some processors the search in L1 and L2 is simultaneous.

The L2 (level 2) cache memory is slower than L1, but has a larger capacity, instead, which allows it to cache more data. Just like L1, it is much faster than the system memory (RAM). If the CPU does not find the data needed in L2, it proceeds to look for them in the L3 cache memory (if there is such) or in the RAM.

A CPU core is the processor unit, which executes software instructions. Presently, besides single-core processors, there are dual-core, quad-core, hexa-core and so on multi-core processors. They increase the performance of the device allowing the execution of multiple instructions in parallel.

The frequency of the processor describes its clock rate in cycles per second. It is measured in Megahertz (MHz) or Gigahertz (GHz).

RAM (Random-Access Memory) is used by the operating system and all installed applications. Data in the RAM is lost after the device is turned off or restarted.

Information about the capacity of the built-in storage of the device. Sometimes one and the same model may is offered in variants with different internal storage capacity.

One of the main characteristics of the display is its type/technology, on which depends its performance.

In mobile devices display size is represented by the length of its diagonal measured in inches.

Approximate width of the display

Approximate height of the display

The ratio between the long and the short side of the display

The display resolution shows the number of pixels on the horizontal and vertical side of the screen. The higher the resolution is, the greater the detail of the displayed content.

Information about the number of pixels per centimeter (ppcm) or per inch (ppi) of the display. The higher the pixel density, the more detailed and clearer is the information displayed on the screen.

The estimated percentage of the screen area from the device's front area.

Information about other functions and features of the display.

Wi-Fi communication between devices is realized via the IEEE 802.11 standards. Some devices have the possibility to serve as Wi-Fi Hotspots by providing internet access for other nearby devices. Wi-Fi Direct (Wi-Fi P2P) is another useful standard that allows devices to communicate with each other without the need for wireless access point (WAP).

There are several USB connector types: the Standard one, the Mini and Micro connectors, On-The-Go connectors, etc. Type of the USB connector used by the device.

There are several versions of the Universal Serial Bus (USB) standard: USB 1.0 (1996), the USB 2.0 (2000), the USB 3.0 (2008), etc. With each following version the rate of data transfer is increased.

Тhe USB interface in mobile devices may be used for different purposes such as battery charging, using the device as a mass storage, host, etc.

Information whether the device is equipped with a 3.5 mm audio jack.

Information about some of the most widely used connectivity technologies supported by the device.

Information about some of the features and standards supported by the browser of the device.

The capacity of a battery shows the maximum charge, which it can store, measured in mili-Ampere hours.

The battery type is determined by its structure and more specifically, by the chemicals used in it. There are different battery types and some of the most commonly used in mobile devices are the lithium-ion (Li-Ion) and the lithium-ion polymer battery (Li-Polymer).

Information about some additional features of the device's battery.

Information about other features of the device.