800MHz FSB with 667MHz DDR2 SDRAM?

bloodandsoil

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Jan 5, 2007
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Will a system with a P965 chipset and 667MHz DDR2 SDRAM be able to operate at a FSB speed of 800MHz with a T7250 (2.00GHz, 800MHz FSB, 2MB L2 Cache)?
 

JustaGeek

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Jan 27, 2007
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800MHz FSB means 200MHz FSB x 4, as Intel CPU's are "quad-pumped".

And 200MHz FSB applies to both, CPU and RAM.

200MHz FSB x 10/6 Memory Multiplier = 333MHz memory bus x 2 DDR = 667 MHz memory speed.

So 800 and 667 is achieved using 200MHz "base" FSB speed.

You can have problems with 667MHz memory and FSB speeds exceeding 333MHz FSB, as 333 x 2 for memory bus would be 667.