Memory not working at rated speed

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david_12

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Jun 22, 2012
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hi everybody
i have gotten 2 4gb rated at 1600 mhz modules (not in a kit) and they are in dual channel mode. But my BIOS says that they are operating at 1333 mhz. How can I get the modules to their rated speed?
 

DJDeCiBeL

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Dec 3, 2010
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Enable the XMP profile or set the timings and speed manually. 1333 is just what the board defaults to.
 

david_12

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my board and processor both support 1600 mhz ram though
 

jaquith

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Feb 8, 2009
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Though I don't disagree with what's stated above that only pertains to Intel CPU's and if your CPU can properly support DDR3-1600.

Q - What CPU?
Q - What MOBO?
 

david_12

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cpu- i7 3770K
MOBo- shuttle z77
 

jaquith

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Use XMP and Profile 1.

In CPU-z it'll show-up as 'DRAM Frequency = 800MHz' but DDR3 = Double Data Rate revision 3 or 800MHz*2 relative to BCLK.
 
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