Solved Is a Bus Clock of 100 megahertz Slow or Fast? What determines the Speed?

[Mike Lynch]

 

[Mike Lynch]

Did I list this I the wrong Forum?

 

[Cliff S]

100 MHz is absolutely normal bus clock speed(also called Base clock or BCLK) which depending on motherboard and chipset controls the clock(takt or cycles per second) of the CPU, RAM, and PCIe lanes.

 

[MGhee]

What determines the actual speed is any bottleneck to a system's performance possibility.

A fast bus speed but an inefficient north or south (chipset) can have an impact on overall speed. In fact, drop a slow 5400 rpm HDD in an otherwise fast system will slow all things down - replace it with a fast SSD or NVME it will improve things considerably. Point being there are numerous factors to consider when it comes to actual speeds and overall system performance - cpu wait, # of lanes, parallel vs serial data path, chipset specs, cpu specs, drive speeds, bus speeds... on and on.

Another simple example might be putting a usb 3.1 drive in a 1.0 slot... the bottleneck is the slot speed in this case.