Unbuffered memory, also known as unregistered memory, is memory where the memory controller module drives the memory directly, instead of using a store-and-forward system like registered memory. The use of unbuffered memory is reasonable for gaming systems. It is not recommended for server-class systems.
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Registered memory (also called buffered memory) contains registers that hold the data for one clock cycle before it is moved on to the motherboard. Registered memory is slightly slower than unregistered/unbuffered memory, and more expensive as well, so it is usually found only in applications where the need for scalability and stability outweighs the need […]
Wireless modems convert radios (HF/VHF/UHF) into digital communications devices to access a private wireless data network or a wireless telephone system, such as the CDPD system. You can use the wireless modem to send and receive e-mail, transfer files, monitor remote operations, and use numerous other applications. Wireless modems come in a variety of types, […]
Workstation is a type of stand alone computer for powerful applications such as publishing, software development, etc. Workstations typically have a large, high-resolution graphics screen, large RAM, built-in network interface, and a graphical processor in addition to normal CPU. The most common operating systems for workstations are LINUX, UNIX and Windows.
A floppy disk is a data storage device that is composed of a circular piece of thin, flexible (i.e. “floppy”) magnetic storage medium encased in a square or rectangular plastic wallet. Floppy disks are read and written by a floppy disk drive or FDD. Unlike most hard disks, floppy disks (often called floppies or diskettes) […]
Graphics Processing Unit (GPU), also called Visual Processing Unit (VPU), is the microprocessor of a graphics card (or graphics accelerator) for a personal computer or game console. Modern GPUs are very efficient at manipulating and displaying computer graphics, and their highly-parallel structure makes them more effective than typical CPUs for a range of complex algorithms.
Level 3 cache is the third-fastest cache memory available to a CPU. It usually consists of SRAM chips located on the motherboard. The “L3″ indicates that the CPU attempts to access this cache after accessing the L1 and L2 cache. Level 3 cache is now the name for the extra cache built into motherboards between […]
Level 2 (L2) cache, also known as secondary cache or RAM cache, is the cache memory external to the CPU. L2 cache memory resides on a separate chip from the microprocessor chip. L2 cache contains a subset of the contents of main memory. The design of the memory and L2 cache is a significant way […]
Level 1 (L1) cache, also known as primary cache, is a memory cache built into the CPU. L1 cache is used by the central processing unit of a computer to reduce the average time to access memory. The cache is a smaller, faster memory which stores copies of the data from the most frequently used […]
Video card is also known as graphics accelerator, video board, video display board, display adapter, video adapter, or graphics adapter. It is a component of a computer to convert a logical representation of an image stored in memory to a signal that can be used as input for a display medium, most often a monitor […]
A sound card, also called a sound board or audio card, is an expansion card for the PC that generates sound and provides audio output to external amplification devices, such as speakers or headphones. Sound cards are necessary for nearly all CD-ROMs and come standard in computers these days. Many motherboards include high definition audio […]
Small Outline DIMM (SODIMM) is a type of computer memory integrated circuit which is an alternative to a DIMM. As a result of being roughly half the size of regular DIMMs, SO-DIMMs are often utilized in laptop computers.
Serial ATA, also known as SATA or S-ATA, is a computer bus primarily designed for transfer of data to and from a hard disk. It is the successor to the legacy Advanced Technology Attachment standard (ATA, also known as IDE). This older technology is now known as Parallel ATA (PATA) to distinguish it from Serial […]
Mass storage refers to various techniques and devices for storing large amounts of data. Mass storage devices include all types of disk drives and tape drives. Mass storage is distinct from memory, which refers to temporary storage areas within the computer. Unlike main memory or RAM, mass storage devices retain data even when the computer […]
Liquid Crystal Display (LCD), used in digital watches and many portable computers, utilizes two sheets of polarizing material with a liquid crystal solution between them. An electric current passed through the liquid causes the crystals to align so that light cannot pass through them. Each crystal, therefore, is like a shutter, either allowing light to […]
MAC address, short for Media Access Control address, is a unique hardware address assigned to each network device. In the case of Ethernet, the hardware address is a 48-bit value. To guarantee global uniqueness, the upper 24 bits are controlled by the IEEE, which allocates them to individual device manufacturers.
AMD64, also known as AMD x86-64 or x64, is a 64 bit processor architecture invented by AMD. It is a superset of the x86 architecture, which it natively supports. The AMD64 Instruction set is currently used in AMD’s Athlon 64, Athlon 64 FX, Athlon 64 X2, Turion 64, Opteron and later Sempron processors. AMD64 instruction […]
Active matrix display is a type of flat-panel display technology based on a technology known as TFT (thin film transistor). It is brighter and may have better resolution than an older passive matrix display technologies.
AGP Pro is an extension to the Accelerated Graphics Port (AGP) specification to provide additional electrical power to the graphics add-in cards in the advanced graphic workstation. The AGP Pro definition includes an extended connector, thermal envelope, mechanical specifications for cards, I/O brackets, and motherboard layout requirements.
PCI Express, a new generation of PCI, is an I/O interconnect bus standard that expands on and doubles the data transfer rates of original PCI. PCI Express is a two-way, serial connection that carries data in packets along two pairs of point-to-point data lanes, compared to the single parallel data bus of traditional PCI that […]