Can I Add 8GB Ram to a 4GB Laptop? (Explained) | WhatsaByte
When buying RAM, it's also important to consider how many slots your motherboard has. Most motherboards support dual-channel memory.
How to add RAM slots from the outside to a laptop
For example, if you have two RAM sticks and four slots, you typically need to install the sticks in slots 1 and 3 or slots 2 and 4 to enable dual-channel mode.
Ddr4 Dual Channel
Evaluate the difference between dual-channel and single-channel RAM. Find out which is worth buying for demanding applications and smoother performance.