8gb + 16gb ram configuration

[bhargavthriler]

Hi, I am using a Lenovo legion y540 15IRHPG0 which came with 8gb ram from samsung. Since my ram usage high running multiple VMs, chrome, building kernels, etc , now I want to upgrade my ram.

I am confused whether I should go for a 16gb or 8gb stick. I found out that using ram of different sizes has some drawbacks like not enabling dual channel support. I have selected the following rams for my upgrade

• XPG ADATA Flame DDR4 8GB : https://www.amazon.in/XPG-PC4-21300-SODIMM-Memory-Laptops/dp/B07K3KJ78Y/ref=sr_1_3?crid=KZMYQHY5WC1Y&dchild=1&keywords=laptop+ram+ddr4+2666mhz&qid=1590258236&sprefix=laptop+ram+ddr4+2666%2Caps%2C266&sr=8-3
• XPG Flame 16GB DDR4 : https://www.amazon.in/XPG-PC4-21300-SODIMM-Memory-Laptops/dp/B07K3V55X6/ref=sr_1_6?crid=KZMYQHY5WC1Y&dchild=1&keywords=laptop+ram+ddr4+2666mhz&qid=1590258236&sprefix=laptop+ram+ddr4+2666%2Caps%2C266&sr=8-6     

My concern are :

1. will 8gb and 16gb ram be supported properly ?

2. does dual channel really matter that much ? because my ram usages is really very high in my other machine even 32gb is used up completely sometimes . 

3. or it is better to have a 8gb+8gb conifg for system stability and having that dual channel speed advantage ?  

 

[Applefreak]

Dual channel is not really important for VM stuff. 

Kingston lists the following memory as compatible with your laptop: KCP426SD8/16

[bhargavthriler]

17 minutes ago, Applefreak said:

Dual channel is not really important for VM stuff. 

Kingston lists the following memory as compatible with your laptop: KCP426SD8/16

Is this ram supported since this is cheaper than the Kingston one you mentioned ?

https://www.amazon.in/XPG-PC4-21300-SODIMM-Memory-Laptops/dp/B07K3V55X6/ref=sr_1_6?crid=KZMYQHY5WC1Y&dchild=1&keywords=laptop+ram+ddr4+2666mhz&qid=1590258236&sprefix=laptop+ram+ddr4+2666%2Caps%2C266&sr=8-6

[Applefreak]

I can't answer that right away. You need to check with the manufacturer for compatibility.