If you want to expand the memory of your desktop PC, you only have one option. Use classic DIMMs (dual inline memory modules) to fill the special slots available on the motherboard.
This will change in the future, or at least what the CXL Consortium wants, and it will define a new type of DRAM memory that can be added to the desktop through a PCIe slot. Samsung has prepared the first product in this regard.
Removable memory The standard CXL began to take shape in 2019, and soon several tech giants cooperated on its development. These giants include Intel, AMD, ARM, IBM, Broadcom, NVIDIA, SK Hynix, and Samsung.
The CXL 1.1 standard, which until recently was the most recent – CXL 2.0 was finalized in November 2020 – covered three different types of uses: CXL.io, CXL.cache, and CXL.memory.
This is exactly the third thing that interests us the most because this type of scenario allows you to expand your computer’s RAM instead of the traditional scenario. Samsung has developed this type of CXL memory module. The image is only a rendering at the moment, but its appearance makes it more or less clear in the format in which you will find these strange modules. Memory module

CXL.memory behaves like a normal module. It’s unclear if it’s hot-swappable or hot-swappable, and what features it supports, but it relies on a PCIe 5.0 connection with x16 links to allow for 32 GT / s bi-directional bandwidth.
These are still volatile memory modules (when you turn off your computer nothing is stored there) and something may change with the CLX 2.0 specification. This is one of the situations where you consider permanent use. Memory.
These modules are currently in full development, so we do not know when they will be available or their prices, but they could be at the same time as the next generation Intel processors. Next, Intel Sapphire Rapids processor. Xeon for the server. Therefore, it may take some time to display these forms on the end user’s desktop.