My CPU supports up to 1333 MHz memory but my memories are at 1866 MHz on BIOS

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sp3ct3r

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Is this dangerous or are they actually running at 1333 MHz and I can't see that on BIOS? Does CPU's memory support matter?
 
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VJ_Gamer
Intel says 1333mhz because that is what the onboard CPU memory controller is rated for. You are technically overclocking the memory controller to run the RAM at higher than speed frequencies. The speed increase from 1866mhz to 2133mhz adds very little performance.

Peace.
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VJ_Gamer

VJ_Gamer

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Which is your CPU? Intel test their CPU for the supported speed of ram. They set it to 1333mhz as recommended after some tests but it wont created a problem if you use ram of more speed(not much higher). When installed it will go to the mobos default. its is fine. But if you need then you can set the bios to use the X.M.P profile or just choose 1600mhz in RAM Speed than AUTO.

Peace.
 
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sp3ct3r

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I have i7 860. I'm going to replace my rams and buy 2133 MHz ram instead, that's why I've been wondering. My motherboard supports up to 2600 MHz ram. I've installed cpuz and apparently my rams are running on 1860 MHz atm.
 
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VJ_Gamer

VJ_Gamer

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Aug 8, 2017
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Intel says 1333mhz because that is what the onboard CPU memory controller is rated for. You are technically overclocking the memory controller to run the RAM at higher than speed frequencies. The speed increase from 1866mhz to 2133mhz adds very little performance.

Peace.
 
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VJ_Gamer

VJ_Gamer

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Aug 8, 2017
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