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Problem in RAM FSB

Last response: in Motherboards
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March 23, 2011 9:14:39 PM

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..............

More about : problem ram fsb

a c 271 Ĉ ASUS
a c 1024 V Motherboard
March 23, 2011 9:34:16 PM

400MHz is actual speed because of Dual Data Rate (DDR) it becomes effective 800MHz!
March 24, 2011 2:59:07 AM

rolli59 said:
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
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a c 271 Ĉ ASUS
a c 1024 V Motherboard
March 24, 2011 11:15:45 AM
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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
March 24, 2011 5:48:08 PM

Best answer selected by jayadratha.
March 24, 2011 6:18:49 PM

rolli59 said:
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.........
!