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2 sets of CMD32GX4M4A2666C15 on ASUS rampage V


gaoyi

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Dear all,

 

I recently assembled a computer with ASUS rampage V mainboard.

 

I got two sets of

CMD32GX4M4A2666C15

 

totally 64GB.

 

However putting them all will make the system unstable --- freeze every few minutes --- unable to use at all.

 

So I only use 32GB and it works great.

 

Could I know if there is a way to use all 64GB? Like adjusting somewhere in the BIOS or anything. The other 32GB are just sitting there is a waste....

 

Thank you for any hint!

 

Best,

yi

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I am assuming your board is actually a Asus Rampage V Extreme. Anyway, I looked at the Asus site for memory that is qualified for your board and this is the Corsair memory recommended:

 

CORSAIR

CMK8GX4M2A2133C15

8GB(4GB*2)

SS

-

-

15-15-15-36

1.2V

CORSAIR

CMK16GX4M2A2133C15

16GB(8GB*2)

DS

-

-

15-15-15-36

1.2V

CORSAIR

CMK8GX4M2A2133C15R

8GB(4GB*2)

SS

-

-

15-15-15-36

1.2V

CORSAIR

CMK16GX4M4A2133C13B

16GB(4GB*4)

SS

-

-

13-15-15-28

1.2V

CORSAIR

CMK16GX4M4A2133C13R

16GB(4GB*4)

SS

-

-

13-15-15-28

1.2V

CORSAIR

CMK16GX4M4A2133C13

16GB(4GB*4)

SS

-

-

13-15-15-28

1.2V

CORSAIR

CMK32GX4M4A2133C13

32GB(8GB*4)

DS

-

-

13-15-15-28

1.2V

CORSAIR

CMK64GX4M8A2133C13

64GB(8GB*8)

DS

-

-

13-15-15-28

1.2V

CORSAIR

CMK16GX4M4A2133C12R

16GB(4GB*4)

SS

-

-

12-14-14-27

1.2V

CORSAIR

CMK32GX4M4A2133C12R

32GB(8GB*4)

DS

-

-

12-14-14-27

1.2V

CORSAIR

CMD16GX4M4A2133C12

16GB(4GB*4)

SS

-

-

12-14-14-27

1.2V

CORSAIR

CMD32GX4M4A2133C12

32GB(8GB*4)

DS

-

-

12-14-14-27

1.2V

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frequently enough that is the case, unmatched ram kits (factory matched, because part# match is irrelevant) are not suggested for this reason.

gaoyi can try a lower speed like 2400 or 2133 and see if it stable.

it may not even be the ram, the memory controller on the CPU may also be at fault.

if you can, please run Memtest86+ (link on left) and let us know what test it fails at if any.

thanks and good luck!

P.S. that cpu is only rated to 2133 with a 64G max ram. i would try a lower speed first to see if thats the issue with the CPUs mem controller at the higher speed.

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