Can I use different ram on each channel?

zackart98 · Dec 26, 2014

Hi, I have the Asus Sabertooth Z77 with corsiar vengeance ram and I was curious if you can put two 4GB ddr3 ram sticks in one channel and two 8GB sticks in the other. The reason why I am asking is that I have the two 4GB sticks in one channel now, however I want to get a ram increase. I wan't to get 32GB at some point so I figured that getting 16GB now would be wise, if it works that is. Thanks!

JackNaylorPE · Dec 26, 2014

It's doable but questionable whether you will see performance improvements over 2 x 8GB....even if it works.

What is that you are doing that will benefit from 32 GB ?

If you usee 32 GB, you do not want to buy 2 sets of 2 x GB....you want a single set of 4 x 8GB.

Mixing RAM from different sets is a crapshoot. Buy 2 sets of Corsair vengeance pro and they are NOT guaranteed to work together.

-2 x 8Gb id better than 4 x 4GB, presents less load on IMC and thereby can even limit CPU overclocks
-If you do try mixing, picking sets w/ same speed, same CAS timings, same vendor, same module supplier presents you with best shot at having it work.
-Even same vendor, same model is no guarantee.... Corsair Vengeance pro used Hynix modules up to version 4.51 after that they use a cheaper supplier.

making two sets work together may require loosening timings, dropping speed, lowering CPU overlcock, increasing voltage or a combination of those.

zackart98 · Dec 26, 2014

JackNaylorPE :

It's doable but questionable whether you will see performance improvements over 2 x 8GB....even if it works.

What is that you are doing that will benefit from 32 GB ?

If you usee 32 GB, you do not want to buy 2 sets of 2 x GB....you want a single set of 4 x 8GB.

Mixing RAM from different sets is a crapshoot. Buy 2 sets of Corsair vengeance pro and they are NOT guaranteed to work together.

-2 x 8Gb id better than 4 x 4GB, presents less load on IMC and thereby can even limit CPU overclocks
-If you do try mixing, picking sets w/ same speed, same CAS timings, same vendor, same module supplier presents you with best shot at having it work.
-Even same vendor, same model is no guarantee.... Corsair Vengeance pro used Hynix modules up to version 4.51 after that they use a cheaper supplier.

making two sets work together may require loosening timings, dropping speed, lowering CPU overlcock, increasing voltage or a combination of those.

Thanks!! I'll look into getting a 4x 8GB set!

Tradesman1 · Dec 26, 2014

JackNaylorPE :

It's doable but questionable whether you will see performance improvements over 2 x 8GB....even if it works.

What is that you are doing that will benefit from 32 GB ?

If you usee 32 GB, you do not want to buy 2 sets of 2 x GB....you want a single set of 4 x 8GB.

Mixing RAM from different sets is a crapshoot. Buy 2 sets of Corsair vengeance pro and they are NOT guaranteed to work together.

-2 x 8Gb id better than 4 x 4GB, presents less load on IMC and thereby can even limit CPU overclocks
-If you do try mixing, picking sets w/ same speed, same CAS timings, same vendor, same module supplier presents you with best shot at having it work.
-Even same vendor, same model is no guarantee.... Corsair Vengeance pro used Hynix modules up to version 4.51 after that they use a cheaper supplier.

making two sets work together may require loosening timings, dropping speed, lowering CPU overlcock, increasing voltage or a combination of those.

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Can I use different ram on each channel?

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