How to combine RAM sets with different sizes?

friedtuna76

Commendable
Dec 14, 2016
9
0
1,510
For a while I have been using this 2x4GB set of RAM.
https://www.amazon.com/Ballistix-Tactical-Profile-DDR3-1600-BLT2K8G3D1608ET3LX0/dp/B00A14ZT8S?th=1

I recently acquired this 2x8GB set for only $20 which was a steal that I could not pass up.
https://www.newegg.com/Product/Product.aspx?Item=N82E16820231568

Having 16GB is great but I'm wondering if I can combine them for 24GB. I know that they are different timings, but I've heard that they will simply use the higher latency (If this is false, let me know). I think I can underclock the g-skill set to account for the voltage differences. I'm wondering how I should arrange the sets in the DIMM slots. I'll call the sticks 'G' for g-skill and 'B' for Ballistix to make it easier to show.
Should I arrange them as BGBG, or GGBB? My motherboard is an ASUS Z97-AR if that determines anything.

If it is overall a bad idea to combine these sets, please let me know. I understand that the only similarities between them is that they are DDR3-1600.
 
Solution
(I could be wrong, but afaik) All system RAM must run at the same speed, timings, and voltage. Some motherboards won't run 4 sticks as fast as they can run 2 sticks.

For best results you should just run the 2x8GB kit. Mixing and matching RAM is not recommended. But... you can still do it if you really want to, or at least you can try.

2x4GB 1.35V 8-8-8-24 (CL8)
2x8GB 1.5V 9-9-9-24 (CL9)

The 2x4GB kit is faster due to tighter timings AND it has lower voltage (which makes it that much better).

But the difference in timings would be pretty much unnoticeable. You could adjust the timings in your motherboard's BIOS and run them all at 1.5V CL9-9-9-24 and hope it works together. If not you can either play with the timings and increase...
(I could be wrong, but afaik) All system RAM must run at the same speed, timings, and voltage. Some motherboards won't run 4 sticks as fast as they can run 2 sticks.

For best results you should just run the 2x8GB kit. Mixing and matching RAM is not recommended. But... you can still do it if you really want to, or at least you can try.

2x4GB 1.35V 8-8-8-24 (CL8)
2x8GB 1.5V 9-9-9-24 (CL9)

The 2x4GB kit is faster due to tighter timings AND it has lower voltage (which makes it that much better).

But the difference in timings would be pretty much unnoticeable. You could adjust the timings in your motherboard's BIOS and run them all at 1.5V CL9-9-9-24 and hope it works together. If not you can either play with the timings and increase them in hopes to run them together or just use one RAM kit.
 
Solution