Just to be clear, when you see 2x4 or 2x8 (or even 4x4), it means you are getting two RAM sticks of however many gigabytes for a total of what is being sold. Oftentimes you also see 1x8 (which means a single 8GB RAM stick). If you purchased two 1x8 of the same brand, it's the same as buying the 16GB 2x8 package.

So 8GB RAM designated as 2x4, means you are getting two 4-GB RAM sticks. 16GB RAM designated as 4x4 means four 4-GB RAM sticks and 2x8 means two 8-GB RAM sticks.

First thing to do is make sure how much RAM your motherboard will hold. My laptop, for example, will only allow 8GB RAM and currently has 2 4GB RAM sticks installed (my bad for not checking this when I bought two 8GB RAM sticks to try to get it to 16GB, but I bought that when RAM was really cheap, so I was only out about $50, still...should have checked). The Crucial site mentioned above is an excellent resource for replacing RAM. You don't have to ultimately buy from them, but you'll ultimately know what to buy.

John

Laptop-HP Omen I7 Win11Pro 32GB 12TB SSD
Desktop-ASUS-I7 Win10Pro 32GB 12TB SATA

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