Problem in RAM FSB

[jayadratha]

I have two 2gb DDR2 ram 800FSB each. Bt softwares which checks the whole pc hardwares (Like everest or CPUID) they says DDR2 800(400MHz) . I am using asus P5KMPL AM\PS . My question is why there has 400MHz in bracket? my rams are 800 FSB but why they are showing 400MHz?

please help me..............

 

[rolli59]

400MHz is actual speed because of Dual Data Rate (DDR) it becomes effective 800MHz!

 

[jayadratha]

400MHz is actual speed because of Dual Data Rate (DDR) it becomes effective 800MHz!

i didn't understand what you said... both memory sticks are of 800MHz so they should run in 800MHz separately,correct? please explain me elaborately. I am confused what is hapenning. These are my mobo FSBs. O.C means overclocked...
FSB 1600(O.C.)/1333/1066/800 MHz
DDR2 1066(O.C.)/800/667 MHz

 

[rolli59]

800Mhz ram runs at 400MHz, 1066 ram runs at 533MHz and so on. The advertised speed is based on effective speed not actual speed. Here is an article http://en.wikipedia.org/wiki/DDR2_SDRAM
The bus clock on 800MHz ram is 400MHz

 

[jayadratha]

Best answer selected by jayadratha.

 

[jayadratha]

800Mhz ram runs at 400MHz, 1066 ram runs at 533MHz and so on. The advertised speed is based on effective speed not actual speed. Here is an article http://en.wikipedia.org/wiki/DDR2_SDRAM
The bus clock on 800MHz ram is 400MHz

Thanks for the info. you guys are really awesome.........