someone explain DDR2 speeds for me!

[onering]

I'm gonna get the new conroe CPU's when they are out. However I have been out of the 'overclocking' scene for a year or so... my current PC is a P4 2.8C (DDR1/400fsb etc).

The new DDR2 speeds, and the FSB of the new CPUs is very confusing. Could someone explain it to me rather briefly?

I'm looking at the E6600 cpu:
2.4GHz = 9*266.. correct? A multi of 9 and a clock of 266. However where does the "FSB 1066" come into it (other than it being 4x266)?

If the FSB is 266, are we looking at DDR2-533 for 1:1 ratio, since 533 is twice 266? Thus for faster ddr2 ram such as 667/800 (at its fastest), are we using the clock at 333/400? Thus the "FSB" = 1333/1600?

This is all a bit confusing... please help me out!

 

[killer_uk]

I'm looking at the E6600 cpu: 2.4GHz = 9*266.. correct?

That is correct


A multi of 9 and a clock of 266. However where does the "FSB 1066" come into it (other than it being 4x266)?

1066 is just the FSB 'quad pumped'. So as you said 4x266

If the FSB is 266, are we looking at DDR2-533 for 1:1 ratio, since 533 is twice 266? Thus for faster ddr2 ram such as 667/800 (at its fastest), are we using the clock at 333/400? Thus the "FSB" = 1333/1600?

I think the first part is correct. A good thread to look at is THIS

This is all a bit confusing... please help me out!

I will take another look at it a little later on, its a bit early in the morning to be looking at this kind of stuff.

 

[FreeStream]

^^ Thats correct

 

[Dutch Guy]

PC4200 : DDR2-533 : 133FSB : 266Mhz
PC5300 : DDR2-667 : 166FSB : 333Mhz
PC6400 : DDR2-800 : 200FSB : 400Mhz
PC8000 : DDR2-1000 : 250FSB : 500Mhz
PC8500 : DDR2-1066 : 266FSB : 533Mhz
PC10000 : DDR2-1200 : 300FSB : 600Mhz