DDR3-1600MHZ showing as PC3-10700H

[Ronarch]

Hi experts of pc building,

My MB is Asrock Z68 Pro3
Memory is Corsair Vengeance® 1.35V 8GB DDR3 (CML8GX3M2A1600C9W)
In Bios I've manually set memory as DDR3-1600 and command rate as 2 (It is 1 if auto)
But I cannot find options regarding FSB😀RAN ratio in it.
Is it normal? Anything else I can to to make it to PC3-12800

 

[Shaun o]

First box of cpu z D ram frequency 800Mhz
DDR double data rate so you times the value by two 800 x 2 = 1600Mhz.


FSB ratio 1-6.

Its fine you forgetting its double data rate 800Mhz up and down stream Synchronous.
At the same time for up and down so you times 800 by 2 to get the rated speed.

800Mhz up 800Mhz down at the same time = total speed of 1600Mhz.

(CML8GX3M2A1600Mhz at cas 9 C9

Look at the JDEC for XMP 1600mhz 800Mhz up and down. Cas 9 set.

Xmp is auto overclocking.

 

[Ronarch]

First box of cpu z D ram frequency 800Mhz
DDR double data rate so you times the value by two 800 x 2 = 1600Mhz.


FSB ratio 1-6.

Its fine you forgetting its double data rate 800Mhz up and down stream Synchronous.
At the same time for up and down so you times 800 by 2 to get the rated speed.

Ok I get you. Thank you.
But what I don't understand is in the SPD page it shows the Max Bandwidth as PC3-10700H (667 Mhz)
Is that something wrong? or still normal?
My ram is DDR3 1600 (PC3 12800) and my motherboard is able to support dual channel DDR3 2133(OC)

 

[Shaun o]

Then enable xmp mode in the bios.
the Trc value is set wrong.
And voltages setting if done manually.

T command state set to 2 not 1.

Trc will be found in the bios settings.
and can be a sub menu.

Look at the last two values from Jdec 3 to 4.

Xmp enable in bios,