New RAM not utilized

Jonilo5 · January 2, 2021

Hello,
I am fairly new to building computers and this is my first time actually upgrading some hardware. I already hade those in the system: Ballistix Sport 2x4GB (BLS4G3D1609DS1S00)
I bought some new memory (CORSAIR Vengeance 8GB (2 x 4GB) 240-Pin DDR3 1600 (PC3 12800) CMZ8GX3M2A1600C9) but it's not being utilized by my system.

When I bought them I made sure they are DDR3, 1600MHz, non-ECC, non-buffered.

Motherboard: FM2A88M Extreme4+

And in BIOS it's not being properly recognised as well:

And the weird thing I noticed is that its Single-channel mode, and I have no idea how to change it (or is it only automatically?). I have tried looking a lot in the OC-tweak tab in BIOS, without luck. Maybe it is my fault - I have two different brands?

Using Speccy it seems like the system detected RAM atleast?

Hardware configured:

Jonilo5 · January 2, 2021

This is solved now.
For some reason changing the configuration (swapping place of the RAM-pairs) worked and made it Dual-channel mode.

mariomague · January 2, 2021

Hey!!
Even if it's solved I want to teach you why it worked so you know it ^^

In your motherboard you have 4 dim slots, A1, A2, B1, B2 so, think like.. one chanel goes to A and another to B, so for having dual chanel you need to have one on A and one on B (also,its better if its simetrical, like A1 and B1 instead of A1 and B2.

I hope its explained well, and that you learned something ^^

Jonilo5 · January 2, 2021

29 minutes ago, mariomague said:

Hey!!
Even if it's solved I want to teach you why it worked so you know it ^^

In your motherboard you have 4 dim slots, A1, A2, B1, B2 so, think like.. one chanel goes to A and another to B, so for having dual chanel you need to have one on A and one on B (also,its better if its simetrical, like A1 and B1 instead of A1 and B2.

I hope its explained well, and that you learned something ^^

Thanks for explaining.

I thought I had this kind of configuration in the beginning (A1 & B1 were the old RAM but then I swapped to A2 & B2 for the old). But wasn't it symmetric in the beginning?