With Intels numbering system a few people are confused by what it all means. So I will make a table here with the basics (as my understanding goes, this may not be exact but the patterns exist across all the chips I have seen) I will add to the list as new ones come out or when I figure out new ones.
sorry for the code box, but I couldn't get tabs in without it
Code:
CPU X Y Z
Intel CPU (P4 or Celeron) XYZ Series Speed Bin Special Modifiers
Base Model Example
Pentium 4 5 3 0
Celeron D 3 3 0
P-M 7 4 0
C-M 3 8 0
P4-M 5 5 2
Series indicates the generation, Speed Bin indicates the base speed
and special modifers indicate features. The series and speed bin are self
explainitory so going into special modifiers:
+J - Execute Disable Bit added
+1 - 64-bit added to non 64-bit series as well as Execute Disable Bit
+5 (P4) 133MHz FSB, everything else is the same as the base model
+5 (Celeron) base multiplier increased by 1, this isn't really a special modifier
it's basically a step between a 3x0 and 3(x+1)0 (ie. Celeron 330, base multiplier 20,
Celeron 335 base multiplier 21 and a Celeron 340 is 22)
+5 (P-M) 100MHz FSB
+3 (P-M) Enhanced Intel SpeedStep Technology (EIST) & Low Voltage
+3 (C-M) Low Voltage
+2/+8 (P4-M) God Only knows. It appears to be something to do with EIST,
the +8 makes sense (+5 133MHz FSB, +3 EIST), the +2 does not.
Also note Series (aka family) features override modifiers. That is to say
a P4 650 (which has EIST, EM64T and XDB) doesn't reqire a +4 (+3 +1).
Some minor inconsistancies: The high end mobile processors have XDB without any modifier.sorry for the code box, but I couldn't get tabs in without it
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