RAM upgrade (slower speed more memory)

[joka]

Hi,

 

i have 4 sticks of Corsair vengeance lpx memory sticks that are 8GB 2666MHz (16-18-18-35) and 2 stick of same brand, name 8GB 3200MHz (16-18-18-36).

 

So 32GB kit and 16GB kit.

 

I had a problem with XMP profile (random crashes on 16GB kit). I dont have expirience in tweaking numbers in bios so i think it will remain off.

 

I will test 32 GB kit on 2666Mhz with XMP profile turned ON to see if its stable.

 

Question is simple  Is there any case i would consider mixing these sticks together or not?

 

Thanks in advance!

[Stahlmann]

Normally mixing shouldn't be a problem if all run without XMP and at stock speeds. In the end all are just DDR4 memory modules.

[Chris Pratt]

57 minutes ago, joka said:

Hi,

 

i have 4 sticks of Corsair vengeance lpx memory sticks that are 8GB 2666MHz (16-18-18-35) and 2 stick of same brand, name 8GB 3200MHz (16-18-18-36).

 

So 32GB kit and 16GB kit.

 

I had a problem with XMP profile (random crashes on 16GB kit). I dont have expirience in tweaking numbers in bios so i think it will remain off.

 

I will test 32 GB kit on 2666Mhz with XMP profile turned ON to see if its stable.

 

Question is simple  Is there any case i would consider mixing these sticks together or not?

 

Thanks in advance!

Is did you mean to say that the second set was 16GB each instead of 8GB? Said you have a 32GB kit and a 16GB kit, but then you said all the sticks are 8GB.

 

It's highly doubtful you actually need 48GB of RAM total, if that's the case. You'd be better off performance wise most likely if you can get 3200Mhz kit running at it's rated speed alone and have even just 16GB or 32GB total, as long as you're not exceeding that amount of RAM usage. Having more RAM capacity than you need does absolutely nothing for you.

[joka]

32 minutes ago, Chris Pratt said:

Is did you mean to say that the second set was 16GB each instead of 8GB? Said you have a 32GB kit and a 16GB kit, but then you said all the sticks are 8GB.

 

It's highly doubtful you actually need 48GB of RAM total, if that's the case. You'd be better off performance wise most likely if you can get 3200Mhz kit running at it's rated speed alone and have even just 16GB or 32GB total, as long as you're not exceeding that amount of RAM usage. Having more RAM capacity than you need does absolutely nothing for you.

I have total 6 sticks each 8GB. 

 

4 sticks are 2666MHz total(32GB), and other 2 are 3200 MHz total (16GB).

 

So my question was if I'm gonna use 16GB with greater speed or 32 GB with lower speed. And is it big preformance difference  beetween these 2 "configurations".

[Chris Pratt]

2x8GB 3200Mhz is always better than 4x8GB 2666Mhz, assuming you're not using more than 16GB. If you start paging to the file system, then the math changes. In most scenarios, particularly if you're just gaming, you will not need more than 16GB. Extra unused capacity does exactly zero for you.