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1600 Mhz RAM shows up as 1333 Khz in bios.

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So i just finished my pc build all went well and smooth. Since i have to wait for my copy of windows i decided to look around in the UEFI/BIOS. one thing i noticed is that my Kingston hyper X genesis ram which is 1600 Mhz on the box and on the warrany label on the heatspreader. is only shown as 1333 Mhz in the bios





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Can some one explain this to me ?

My system.

Asus p8z77-v lx
kingston hyper X genesis 2x4Gb
intel core i5 3570k ivy bridge cpu

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I've checked the manual. It doesn't specify a XMP setting for Ai Tweaker/Ai Overclock Tuner. Check though in BIOS and see what options are available. If only manual, leave it as default, then after installing Windows, install CPU-Z and manually set in BIOS the values for XMP.

In my ASUS EZ Mode BIOS, it has options for Energy Saving Mode, Normal Mode, or Performance Mode. I am not sure if you have options like that. For me, if Normal Mode is selected then I will have the 1600mhz option, if performance mode is selected the option is bumped to 1648mhz. Also the processor seems to be bumped as well. I am running mine on 1648mhz and everything is great, you can see if you have some sort of Normal Mode then set it back to 1600mhz if you like. When I made changes to the Mode it is in, I had to Save and Reset before you adjust the speeds.
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