question about my motherboard

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cvargasr

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Mar 26, 2017
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Hi I currently have 1333mhz, for a uknown reason speccy said it is lower lol. But i want to upgrade either 1600 or 1866 mhz.

I have in mind this
https://www.amazon.com/Kingston-HyperX-FURY-1600MHz-DDR3/dp/B00J8E92M6
or this
https://www.amazon.com/Kingston-HyperX-FURY-1866MHz-DDR3/dp/B00J8E91UO

my question is if my motherboard supports both of them or only 1600?
cnTDTkd


I dont know if u can see the image
but this is my mother board: gigabyte GA-B85M-DS3H

and i have a intel core i7 4770@3.4ghz
 
Solution
raisonjohn
If speccy shows ~666.5MHz ("lower" speed), then, it is correctly showing your 1333MHz DDR3 RAM because DDR = Double Data Rate = 2 transfers per cycle. So, 666.5MHz x 2 = 1333MHz <---- your RAM speed.

Your motherboard only supports up to a max. of 1600MHz RAM speed: https://www.gigabyte.com/Motherboard/GA-B85M-DS3H-rev-11#sp

You can still physically plug in a faster RAM speed, such as an 1866MHz, but, it cannot achieve that faster speed and will only downclock to 1600MHz (max.), which is the max. your motherboard can support.
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raisonjohn

raisonjohn

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Feb 22, 2015
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If speccy shows ~666.5MHz ("lower" speed), then, it is correctly showing your 1333MHz DDR3 RAM because DDR = Double Data Rate = 2 transfers per cycle. So, 666.5MHz x 2 = 1333MHz <---- your RAM speed.

Your motherboard only supports up to a max. of 1600MHz RAM speed: https://www.gigabyte.com/Motherboard/GA-B85M-DS3H-rev-11#sp

You can still physically plug in a faster RAM speed, such as an 1866MHz, but, it cannot achieve that faster speed and will only downclock to 1600MHz (max.), which is the max. your motherboard can support.
 
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