should I buy 1600 or 2133MHz+ ram with asrock z68 ext4 gen3?

jarodatkinson · Nov 2, 2017

Hi guys...
I'm looking to upgrade my ram, but the specs on my mobo's website are a bit confusing.... It says my motherboard takes ddr3 @ 2133(oc)/1866(oc)/1600/1333/1066....... What do the two (oc) references mean? In short, can I buy two 2133mhz or 2400mhz sticks of ram to replace my 1 stick, and just plug them in and get 2133mhz?
Mobo is asrock z68 extreme4 gen3 if that helps... thanks.

feelinfroggy777 · Nov 2, 2017

The board will support 2133 RAM that is overclocked. So if you plug it in, no it wont run at 2133. All you would have to do is go into your bios and enable XMP. XMP is essentially a one button click overclock of your RAM.

jarodatkinson · Nov 2, 2017

feelinfroggy777 :

So you are saying I should buy 2133mhz ram which will automatically underclock to 1600mhz when I plug it in.... I can then change ram setting in the oc'ing tool in bios, and it will run at the 2133mhz speed....... (If I read your reply correctly, I don't even have to manually oc the ram, there should be an xmp profile in the bios to run 2133mhz?)

feelinfroggy777 · Nov 2, 2017

jarodatkinson :

In short, yes you are right. But it wont "underclock" to 1600mhz. 1600mhz is the native frequency. The RAM has just been test to work at 2133mhz. So when you insert the RAM it will run at 1600. Then you will need to activate the XMP profile (which is overclock) and it will run the RAM at 2133.

jarodatkinson · Nov 2, 2017

feelinfroggy777 :

jarodatkinson :

In short, yes you are right. But it wont "underclock" to 1600mhz. 1600mhz is the native frequency. The RAM has just been test to work at 2133mhz. So when you insert the RAM it will run at 1600. Then you will need to activate the XMP profile (which is overclock) and it will run the RAM at 2133.

Thank you.....perfect.... I understand now..Thanks so much for taking the time to help me out with this... Ram is expensive, I needed the right advice....thanks

Calvin7 · Nov 2, 2017

The CPU contains the memory controller. A Celeron G460 supports DDR3-1066MHz while 2133MHz may be appropriate for an OC on a "K" CPU with an unlocked multiplier such as the i5-3570K.

jarodatkinson · Nov 2, 2017

Calvin7 :

Ok cool, thank you Calvin... I'm getting a new chip too after I buy this ram, so that is great info for me.....

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