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Motherboards and 400MHz+ RAM


HallofWebs

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Hi,

 

So while reading monthly e-zines from Corsair about their RAM hitting 433MHZ...500...533+ it has dawned on me that I don't remember seeing motherboards with faster than 400MHz FSB's.

 

Now I realize that these are two different topics, but how does a relatively slower FSB effect the performance of hi-speed RAM, thus effecting the overall performance of the machine?

 

Thanks,

HallofWebs

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You have to understand the following architecture on both Intel & AMD, and DDR technologies. Intel is based on Quanti Speed Architecture (4 for P4), so the core FSB of the CPU is 200 for an 800 MHz FSB (4 x 200);now for the AMD and DDR 400 MHz, which (2 x 200.) Now to be able to run DDR433, 466, 500, or 550; you need to adjust the FSB of your CPU to 275 MHz and set the CPU:FSB ratio 1:1, this will give you i.e 2.4C 2400/ 200= 12 => 12x 275 = 3200 and if set to 1:1 DDR 275 (based on the CPU external clock) x 2 = DDR550. Hopefully this gave you a better concept on how everything works and also a little preview on the OC'ing part.
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