A processor in the new computer that loads twice as much MHz or GHz as the previous computer does not mean that twice as much completed work will be done in the same amount of time. Internal cache and processor architecture, as well as RAM, memory, and networking speed, contribute to the computer`s actual performance and overall throughput. See Cache. Users are often dismayed to find only incremental improvements after purchasing a so-called «faster» computer. In addition, newer versions of the software are sometimes slower than previous versions, and a faster computer is often required to maintain the same level of performance as the old software. See instructions per second, hertz and space/time. The typical clock rates of computers, once on the order of a few hundred megahertz, are now often on the order of gigahertz. When designing computer bus architectures, the clock frequency of the microprocessor is taken into account as well as the speed or potential amount of data that can enter the computer from I/O devices to optimize overall computer performance. When SDRAM (Synchronous Dynamic Random Access Memory) was introduced in the late 1990s, data transfer speed was measured synchronously with the motherboard clock, with data transfer occurring at the increasing limit of the clock cycle. When measuring SDRAM performance, 100 MHz indicated 100 x 106 data transfers per clock cycle. MT/s is short for megatransfers (or millions of transfers) per second and is a more accurate measure of the effective data rate (speed) of DDR SDRAM memory in data processing. These sample phrases are automatically selected from various online information sources to reflect the current use of the word «megahertz.» The views expressed in the examples do not represent the views of Merriam-Webster or its editors.
Send us your feedback. Nglish: Translation of Megahertz for Spanish speakers. Megahertz (MHz) and gigahertz (GHz) are used to measure processor speed. For example, a 1.6 GHz computer processes data internally (calculated, compared, copied) twice as fast as an 800 MHz computer. However, the unit of measurement has not changed. With a clock frequency of 100 MHz, DDR doubled the effective data rate with 200 million data transmissions in each clock cycle. A new, more precise description was long overdue. The bandwidth of a digital signal in megahertz is related to the speed of the data in bits per second. In general, the higher the data speed, the greater the bandwidth. However, data speed is not the same as bandwidth. A high-speed cable or fiber optic modem operating at a speed of 5,000,000 bps has, in a sense, a nominal frequency of 5 MHz.
But bandwidth is usually much smaller because it depends on the variations of each piece of data, not the number of bits of data per unit of time. (MegaHertZ) One million cycles per second. MHz is used to measure the transmission speed of electronic devices, including channels, buses, and the computer`s internal clock. A clock of one megahertz (1 MHz) means that a certain number of bits (1, 4, 8, 16, 32 or 64) can be manipulated at least a million times per second. A two-gigahertz (2 GHz) clock means at least two billion times. The «at least» is due to the fact that often several operations occur in a clock cycle. The megahertz, abbreviated MHz, is a unit of alternating wave (AC) or electromagnetic (EM) frequency equivalent to one million hertz (1,000,000 Hz). Megahertz is often used to express the clock frequency of the microprocessor.
The device is sometimes used for bandwidth measurements or declarations for high-speed digital data, analog and digital video signals, and spread spectrum signals. When referring to processor speed, MHz and GHz evaluate the raw and continuous pulses that power a chip`s circuitry. German physicist Heinrich Hertz identified electromagnetic waves in 1883 and, coincidentally, «heart» means «heart» in German. The other frequency units are kHz, which corresponds to 1,000 Hz or 0.001 MHz, and gigahertz, which corresponds to 1,000,000,000 Hz or 1,000 MHz. MHWTSS – MHWY – MHX – MHXX – MHY – MI – MI Aiud – MI Roman – MI Sighişoara – MI-AATF An EM signal with a frequency of 1 MHz is located near the center of the standard amplitude modulation (AM) radio band and has a wavelength of 300 meters, or about 980 feet. A 100 MHz EM signal is located near the center of the standard frequency modulated radio frequency (FM) band and has a wavelength of 3 meters, or just under 10 feet. Some radio transmissions are made at frequencies up to several thousand megahertz. Typical computer clock rates are constantly increasing, but are usually on the order of a few hundred megahertz.