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Memory underclocked problem


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#1 stlolth

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Posted 18 April 2009 - 09:42 PM

I recently bought a Gigabyte p31-es3g motherboard. In it's specs it said it supported 1066mhz ddr2 memory. So i went and bought 2 x 1gb Corsair TWIN2X2048-8500c5d PC8500 1066MHz, 5-5-5-15, Dominator E.P.P. Technology Memory. But later i saw that it was a 2.1v model while my motherboard supported 1.8v models. I thought "whatever, i'll just up the voltage in the BIOS to 2.1 and that will do the trick." When i plugged it in, the bios reported it working at 533mhz. But regardless of upping the voltage to 2.1 or leaving it at 1.8 the clock doesn't change, it stays at 533mhz.

What am i getting wrong? What did i do wrong? What am i missing?

Edited by stlolth, 18 April 2009 - 09:43 PM.


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#2 DJBPace07

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Posted 18 April 2009 - 10:49 PM

You should have 533MHz in each stick for a data rate of 1066MHz per dual channel module. DDR stands for Double Data Rate, so you take the actual speed the memory is running, and multiply it by two to get the "effective rate". (533x2=1066)

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#3 stlolth

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Posted 18 April 2009 - 11:11 PM

So does that mean even if i had one stick or memory it would report it as 633 but would be calculated as 1066, or do i need two sticks running at 633 to be calculated as 1066?

Edited by stlolth, 18 April 2009 - 11:47 PM.


#4 Sneakycyber

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Posted 19 April 2009 - 06:08 PM

533 but yes one or two sticks will run at 1066. The benifit of having 2 matched sticks comes if your board supports dual channel.

Chad Mockensturm 

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Certified CompTia Network +, A +





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