Question about FSB.?

Question

An example would be the E4300. In its specification, it's FSB is 800 Mhz but when I hear people talking about it, they say that the FSB is 200 Mhz. What's the difference because this doesn't make any sense.

Answer 1

200MHz actual, 800MHz effective. The bus operates at 200 million cycles per second, but it transfers 4 bits of data in a burst every cycle. More properly, it's 800MT/s (mega-transfers per second).

Answer 2

It is due to Intel's quad pumping. Read more:

http://en.wikipedia.org/wiki/Quad-pumped