Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Data Rates Calculation Question

  1. Mar 24, 2010 #1
    My A+ certification study guide says:

    "PCI expansion buses operate at 33 or 66MHz over a 32-bit (4 byte) channel, resulting in data rates of 133 and 266MBps, respectively..."

    How did they get 133 and 266MBps? I multiplied 4 bytes by 33 and 66 MHz and the products were 132MBps and 264MBps, respectively.
     
  2. jcsd
  3. Mar 25, 2010 #2
    The frequency is really 33.33 or 66.66 MHz. For some reason, these numbers were usually rounded down.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Data Rates Calculation Question
  1. Video Data Rate (Replies: 5)

  2. Copying data (Replies: 6)

Loading...