Clock signal
In electronics and especially synchronous digital circuits, a clock signal is a particular type of signal that oscillates between a high and a low state and is utilized like a metronome to coordinate ...
Clock multiplier
In computing, the clock multiplier (or CPU multiplier or bus/core ratio) measures the ratio of an internal CPU clock rate to the externally supplied clock. A CPU with a 10x multiplier will thus see 10...
Dynamic frequency scaling
Dynamic frequency scaling (also known as CPU throttling) is a technique in computer architecture whereby the frequency of a microprocessor can be automatically adjusted "on the fly," either to conserv...
Clock skew
The operation of most digital circuit systems, such as computer systems, is synchronized by a periodic signal known as a "clock" that dictates the sequence and pacing of the devices on the circuit. T...
SpeedStep
SpeedStep is a trademark for a series of dynamic frequency scaling technologies (codenamed Geyserville and including SpeedStep, SpeedStep II, and SpeedStep III) built into some Intel microprocessors t...
Underclocking
Underclocking, also known as downclocking, is modifying a computer or electronic circuit's timing settings to run at a lower clock rate than is specified. It is analogous to driving a car below the sp...
CPU locking
CPU locking is the process of permanently setting a CPU's clock multiplier. AMD CPUs are unlocked in early editions of a model and locked in later editions, but nearly all Intel CPUs are locked and r...
Memory divider
A memory divider is a ratio which is used to determine the operating clock frequency of computer memory in accordance with front side bus (FSB) frequency, if the memory system is dependent on FSB cloc...
Stress testing
Stress testing (sometimes called torture testing) is a form of deliberately intense or thorough testing used to determine the stability of a given system or entity. It involves testing beyond normal o...
H tree
In fractal geometry, the H tree is a fractal tree structure constructed from perpendicular line segments, each smaller by a factor of the square root of 2 from the next larger adjacent segment. It is ...
H tree - Wikipedia
Megahertz myth
The megahertz myth, or less commonly the gigahertz myth, refers to the misconception of only using clock rate (for example measured in megahertz or gigahertz) to compare the performance of different m...
Clock recovery
Some digital data streams, especially high-speed serial data streams (such as the raw stream of data from the magnetic head of a disk drive) are sent without an accompanying clock signal. The receive...
Clock generator
A clock generator is a circuit that produces a timing signal (known as a clock signal and behaves as such) for use in synchronizing a circuit's operation. The signal can range from a simple symmetrica...
Clock generator - Wikipedia
Clock rate
The clock rate typically refers to the frequency at which a chip like a central processing unit (CPU), one core of a multi-core processor is running, and is used as an indicator of the processor's spe...
Instructions per cycle
In computer architecture, instructions per clock (instruction per cycle or IPC) is one aspect of a processor's performance: the average number of instructions executed for each clock cycle. It is the...
Asynchronous circuit
An asynchronous circuit, or self-timed circuit, is a sequential digital logic circuit which is not governed by a clock circuit or global clock signal. Instead they often use signals that indicate comp...
Source-synchronous
Source-Synchronous clocking refers to a technique used for timing symbols on a digital interface. Specifically, it refers to the technique of having the transmitting device send a clock signal along w...
Clock shear
The operation of most digital circuit systems, such as computer systems, is synchronized by a periodic signal known as a "clock" that dictates the sequence and pacing of the devices on the circuit. T...
LongHaul
VIA LongHaul is a CPU speed throttling and power saving technology developed by VIA Technologies. By executing specialized instructions, software can exercise fine control on the bus-to-core frequenc...
Overclocking
Overclocking is the process of forcing a computer or component to operate faster than the manufactured clock frequency. Operating voltages may also be changed (increased), which can increase the speed...
Overclocking - Wikipedia
Burst mode clock and data recovery
The passive optical network (PON) uses tree-like network topology. Due to the topology of PON, the transmission modes for downstream (that is, from optical line termination, (OLT) to optical network u...
Cool'n'Quiet
Cool'n'Quiet is a CPU dynamic frequency scaling and power saving technology introduced by AMD with its Athlon 64 processor line. It works by reducing the processor's clock rate and voltage when the pr...
Cycles per instruction
In computer architecture, cycles per instruction (aka clock cycles per instruction, clocks per instruction, or CPI) is one aspect of a processor's performance: the average number of clock cycles per i...
Moore's law
"Moore's law" is the observation that, over the history of computing hardware, the number of transistors in a dense integrated circuit doubles approximately every two years. The observation is named a...
CPU multiplier
In computing, the clock multiplier (or CPU multiplier or bus/core ratio) measures the ratio of an internal CPU clock rate to the externally supplied clock. A CPU with a 10x multiplier will thus see 10...
Clock gating
Clock gating is a popular technique used in many synchronous circuits for reducing dynamic power dissipation. Clock gating saves power by adding more logic to a circuit to prune the clock tree. Prunin...
Dynamic frequency and voltage scaling
Dynamic voltage scaling is a power management technique in computer architecture, where the voltage used in a component is increased or decreased, depending upon circumstances. Dynamic voltage scaling...
Computer cooling
Computer cooling is required to remove the waste heat produced by computer components, to keep components within permissible operating temperature limits.Components that are susceptible to temporary m...
Computer cooling - Wikipedia
Synchronous circuit
A synchronous circuit is a digital circuit in which the parts are synchronized by a clock signal. In a sequential digital logic circuit, data is stored in memory devices called flip-flops or latches...
Static core
Static core is a central processing unit (CPU) chip entirely implemented in static logic -- in other words, the CPU can be clocked down to zero hertz.It can be stopped simply by stopping the system cl...
Double data rate
In computing, a computer bus operating with double data rate (DDR) transfers data on both the rising and falling edges of the clock signal. This is also known as double pumped, dual-pumped, and double...