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In computing, the clock multiplier (or CPU multiplier or bus/core ratio) sets the ratio of an internal CPU clock rate to the externally supplied clock. This may be implemented with phase-locked loop (PLL) frequency multiplier circuitry. A CPU with a 10x multiplier will thus see 10 internal cycles for every external clock cycle. For example, a ...
Further, a "cumulative clock rate" measure is sometimes assumed by taking the total cores and multiplying by the total clock rate (e.g. a dual-core 2.8 GHz processor running at a cumulative 5.6 GHz). There are many other factors to consider when comparing the performance of CPUs, like the width of the CPU's data bus , the latency of the memory ...
Overclocking BIOS setup on an ABIT NF7-S motherboard with an AMD Athlon XP processor. Front side bus (FSB) frequency (external clock) has been increased from 133 MHz to 148 MHz, and the CPU clock multiplier factor has been changed from 13.5 to 16.5. This corresponds to an overclocking of the FSB by 11.3 percent and of the CPU by 36 percent.
The dynamic power (switching power) dissipated by a chip is C·V 2 ·A·f, where C is the capacitance being switched per clock cycle, V is voltage, A is the activity factor [1] indicating the average number of switching events per clock cycle by the transistors in the chip (as a unitless quantity) and f is the clock frequency.
Clock speed L2 L3 FSB speed Clock multiplier Voltage range TDP Socket Release date Part number(s) Release price (USD) Pentium 4 Extreme Edition 3.2: SL7AA (M0) 3.2 GHz 512 2MB: 800 MT/s: 16×: 1.55V: 92.1 W: Socket 478: November 3, 2003: BX80532PG3200F RK80532PG0882M: $925 [34] Pentium 4 Extreme Edition 3.4: SL7CH (M0) 3.4 GHz 512 2MB: 17×: 1. ...
The frequency at which a processor (CPU) operates is determined by applying a clock multiplier to the front-side bus (FSB) speed in some cases. For example, a processor running at 3200 MHz might be using a 400 MHz FSB. This means there is an internal clock multiplier setting (also called bus/core ratio) of 8. That is, the CPU is set to run at 8 ...
[40] [41] CPUs with "X" suffix have its multiplier unlocked for overclocking. [42] No suffix letter: Locked clock multiplier; X: Unlocked clock multiplier (adjustable with no ratio limit) Xeon W-2400/2500 uses a monolithic design and supports up to 64 PCI Express 5.0 lanes, while Xeon W-3400/3500 uses a chiplet design and supports up to 112 lanes.
The Am5x86 (also known as the 5x86-133, Am5x86, X5-133, and sold under various 3rd-party labels such as the Kingston Technology "Turbochip" [4]) is an Enhanced Am486 processor with an internally set multiplier of 4, allowing it to run at 133 MHz on systems without official support for clock-multiplied DX2 or DX4 486 processors.