Jan 7, 2013 #1 dragonfury Member level 4 Joined Apr 21, 2007 Messages 69 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Activity points 1,724 Hi all, Why are the data-rates for DDR3 defined as 1066MHz, 1333MHz instead of simply 1000MHz, 1300MHz. Why is the increment in data speeds not round off? Is it some standard that was set in history?
Hi all, Why are the data-rates for DDR3 defined as 1066MHz, 1333MHz instead of simply 1000MHz, 1300MHz. Why is the increment in data speeds not round off? Is it some standard that was set in history?
Jan 7, 2013 #2 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,961 Helped 14,780 Reputation 29,845 Reaction score 14,249 Trophy points 1,393 Location Bochum, Germany Activity points 300,439 They are fractional numbers referred from 400 MHz.
Jan 7, 2013 #3 dragonfury Member level 4 Joined Apr 21, 2007 Messages 69 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Activity points 1,724 Why are they fractional? Any reason?
Jan 7, 2013 #4 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,961 Helped 14,780 Reputation 29,845 Reaction score 14,249 Trophy points 1,393 Location Bochum, Germany Activity points 300,439 Clock generator frequency ratios are fractional, too. Obviously, the specification is historical somehow. If you don't like it, use 1000, 1300 MHz etc.
Clock generator frequency ratios are fractional, too. Obviously, the specification is historical somehow. If you don't like it, use 1000, 1300 MHz etc.
Jan 7, 2013 #5 dragonfury Member level 4 Joined Apr 21, 2007 Messages 69 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Activity points 1,724 I just wanted to know if there is some logical reason behind it.