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About bus speed in CPU

Updated: 12/20/2022
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12y ago

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Many manufacturers publish the speed of the FSB in MHz, but often do not use the actual physical clock frequency but the theoretical effective data rate (which is commonly called megatransfers per second or MT/s). This is because the actual speed is determined by how many transfers can be performed by each clock cycle as well as by the clock frequency. For example, if a motherboard (or processor) has a FSB clocked at 200 MHz and performs 4 transfers per clock cycle, the FSB is rated at 800 MT/s.

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Q: About bus speed in CPU
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Related questions

Can bus speed impact performance of a CPU?

yeh


What are bus speeds?

bus speed is a speed measured in megahertz that is detemines how fast the memory and cpu runs. high-quality memory is required for higher bus speed


Which factor determines the speed of CPU?

size of the address bus


Why is it more important to describe the CPU and the motherboard bus using the term frequency rather then speed?

The CPU and the Motherboard bus(called the Frontside Bus) run at 2 different speeds. The Frontside bus runs at the speed that was specified for that particular motherboard and is powered by a crystal that sends electronic pulses over the bus at a steady rate. For instance you're bus speed may be 100MHz. But your CPU speed may be 800Mhz. The reason is that the CPU manufactorer build in a multiplier into the CPU to make it faster. In the example I just gave you, the multiplier is 8x. So 100MHz bus speed times 8 = 800MHz CPU speed. Now if you want to figure out the throughput you multiply the CPU speed (800MHz by 8(8 byes). And you have the throughput of 1600MB or 1.6GHZ. If you bought a PC with these calculations it would be a PC1600. Finally, the reason it is 8 bytes is because motherboard bus these days send data in 64-bit chunks which is 8 bytes.


What CPU speed designation is closest to 1066Mhz?

That would be 1 GHz, though I would not want to attach a CPU of the speed to a bus that fast.


What is the formula for calculating the CPU speed if the Bus speed is known?

I don't know look on google


What is front side bus speed?

The front side bus connects the CPU on the motherboard to the Northbridge. Front side bus speed is in preference to how much data can move across the bus simultaneously, and is measured in megahertz.


Is the system bus or the CPU faster?

The system bus is usually inside of the CPU, but I guess it depends on the processor and the motherboard. Usually, CPU clock speeds are faster, as they are measured in GHz, while the system bus speed is usually measured in MHz. Hope this helped! SeanHolshouser


What options have an effect on the speed of the communication between the CPU and RAM in a computer?

CPU front side bus RAM clock rate


Why do laptop computers use CPU throttling techniques?

to conserve the battery life by reducing the bus speed between the CPU and RAM


Components that must use the same front side bus speed?

motherboard and cpu


What is the function of front side bus?

The front side bus formerly connected the Northbridge Controller to the CPU (a way of communication) it still has the same communication, but it is not called FSB, it is called a HyperTransport Bus.