Quick Wikipedia FSB and memory question?

Vyse

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Feb 13, 2009
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Hey all,

I was just try to figure out the FSB in my mind and got stuck because of this wiki article

http://en.wikipedia.org/wiki/Front_side_bus

It says,

The bandwidth or maximum theoretical throughput of the front side bus is determined by the product of the width of its data path, its clock frequency (cycles per second) and the number of data transfers it performs per clock cycle. For example, a 32-bit (4-byte) wide FSB operating at a frequency of 100 MHz that performs 4 transfers per cycle has a bandwidth of 1600 megabytes per second (MB/s).

ok, this all makes sense to me except one thing! 4 transfers of 4 bytes = 16bytes, 16 bytes x 100mhz = 1600bytes!!! They say it equals 1600Megabytes though!! So shouldn't it be bytes instead of megabytes?

Can someone help me,
Thanks!
 
Nope. 100MHz is equal to 100,000,000Hz (cycles/sec). Therefore, 4 transfers per cycle multiplied by 4 bytes per transfer multiplied by a hundred million cycles per second is equal to 1600 million bytes per second.

Your math would be correct for a 100Hz FSB though :)