Are DDR3 and DDR4 laptop memory (RAM) compatible? That’s a common question when it comes to memory upgrades. For instance, you bought a new laptop with DDR4 RAM and want to add more memory to it by inserting a DDR3 RAM module from your older laptop. You wonder if that’s possible. Unfortunately, that can’t be done. DDR3 and DDR4 laptop memory are not compatible / interchangeable.
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Dell Inspiron 15 3000 3543, 3542, 3541 RAM & Hard Drive Upgrade Guide
The Dell Inspiron 15 3000 is currently one of the best selling models among Windows-based laptops. Regarding system memory and hard drive upgrades, the 15 3000, or more precisely the 3543, 3542, and 3541, is very user-friendly. To access RAM and HDD, you just need to remove the plastic cover on the bottom of the chassis. The cover is held by only one screw, so doing operations such as replacing the pre-installed RAM or replacing pre-installed HDD with a solid state drive is a breeze.