Bus speed usually refers to the speed of the front side bus (FSB), which connects the CPU to the northbridge. FSB speeds can range from 66 MHz to over 800 MHz. Since the CPU reaches the memory controller though the northbridge, FSB speed can dramatically affect a computer’s performance.Click to see full answer. In this manner, how do system buses affect computer performance? Bus Feeds the CPU The CPU itself needs data to process; the bus’ job is to get that data to the CPU. The bus does not increase or decrease the CPU’s speed, but handles that data that flows in and out of the device, which plays a key role in how well the CPU performs.Also, what is the effect of the bus width on the speed of a computer? If you have a larger bus width, as with a system clock, the commands can be processed quicker. Clock speeds affects that performance of a computer system by: if the frequency of the clock period is higher, then the speed of the processes within the computer will also speed up. Subsequently, question is, how important is bus speed? In general, the faster the bus speed, the faster the computer. That works up to a point and can’t make up for slow processors. But generally speaking, a faster bus means a faster computer.What affects a computer’s speed?Memory affects computer speed because the CPU must move information into memory and retrieve data from it when running applications. If you have a lot of memory, the CPU can move larger chunks of it faster. Computers also use your hard drive as a virtual memory area when your RAM cannot hold any more data.