How do you choose RAM for your Windows laptop?
SODIMM form factor
A RAM module for a laptop is always of the form factor type SODIMM. This form factor is more compact than DIMM, making it suitable for laptops. This is the first thing you should consider in your choice of RAM for your laptop.
Note the DDR standard
There are currently 2 RAM standards available: DDR3 and DDR4. This says something about the speed of the memory and about the support of the laptop's motherboard for the RAM. DDR3 doesn't work with DDR4. Support for DDR3 RAM is mainly found in older laptops. The faster DDR4 was introduced in 2014 and can be found in most laptops from that year.
Clock speed of the RAM
The speed of the RAM also plays a role in your choice. This is called the clock speed and is expressed in Megahertz (MHz). This must match the speed that the laptop's motherboard supports. For example, if your laptop supports a RAM with a speed of 1600MHz, it makes no sense to insert 2100MHz RAM. Always make sure that these speeds match.
Check how much space you have for extra memory
Laptops have space for 1 or 2 memory slots that can accommodate a RAM module. If a laptop has 2 slots, there's often only one in use. You can therefore expand this with a second (similar) RAM module. If a laptop only has one slot and you want more RAM, you'll have to replace the module.