While DDR memory crept into mainstream Pentium 4 systems in 2002, back then users looking for top of the line performance still had to go with RDRAM. The i850E/PC1066 RDRAM combo held the performance crown for most of last year, but in 2003 things are turning out to be totally different. Cast aside the i850E chipset and RDRAM which have gone the way of the dodo, and the new king of the hill is clearly Intel's i875P chipset a.k.a. "Canterwood."
As for the actual performance and architectural differences between the i865PE and i875P which runs with DDR memory, we'll get to that in just a bit.
Intel had previously road mapped the Pentium4 from 533MHz FSB to 667MHz with the "Springdale" chipset. Springdale-based motherboards were originally expected to support 667/533/400MHz FSB Pentium 4 processors, but with Canterwood everything has been shifted towards 800MHz FSB.
These changes were announced on November of 2002 during Comdex Fall 2003, much to the surprise of motherboard manufacturers
who had many 667MHz FSB Springdale motherboards actually on display. When we take into account AMD's recent rise to 400 MHz FSB, Intel's mirroring of this bus speed change in November of last year now makes more sense.
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