Hello, I'm in the process of researching to upgrade a computer with a new motherboard and cpu.
what's the difference when talking about the "front side bus" on the motherboard, and the "bus speed" on the processor?
From what I've learned from howstuffworks.com
, the front side bus is the bus between the processor and northbridge. Then what is the bus speed? They say: "Bus speed usually refers to the speed of the front side bus (FSB)". So what they're saying is that: bus speed = front side bus speed.
Howerver, I found another site about bus speeds:
They say that "The system clock is the actual speed of your FSB with out any enhancements....The system clock is also sometimes just called the bus speed." They later say: "The Pentium4 3.06GHz processor has a FSB of 533MHz. Its system clock is 533 / 4 = ~133. The multiplier is 3,060 / 133 = ~23.
The AMD Athlon XP2700+ has a main clock speed of 2.17GHz and a FSB of 333MHz. Its system clock is 333 / 2 = ~166MHz. The multiplier is 2,170 / 166 = ~13"
Now I'm getting confused....It sounds like the system clock (which according to them is the "bus speed") is always slower than the FSB.
Here's a mobo/cpu combo at tigerdirect.com:
The FSB on the motherboard is 800mhz, but the bus speed on the processor is 1600mhz. I don't understand what's going on here. Directron.com said that the bus speed is always slower than the FSB.