What is the difference between SODIMM and DIMM?

DIMM (Dual In-Line Memory Module) and SO-DIMM (Small Outline Dual In-Line Memory Module) are both types of memory modules, but they differ in size, shape, and usage.

DIMM (Dual In-Line Memory Module)

• Larger than SO-DIMM
• Typically used for desktop computers
• Has 240 pins (or 168 pins for older systems)
• Used to connect multiple RAM chips together on a single module
• Can be up to 16 GB per module (depending on the system)

SO-DIMM (Small Outline Dual In-Line Memory Module)

• Smaller than DIMM
• Typically used for laptops, mobile devices, and some embedded systems
• Has 200 pins or 204 pins (for newer systems)
• Used to connect multiple RAM chips together on a single module, similar to DIMM
• Can be up to 16 GB per module (depending on the system)

The main differences between SO-DIMM and DIMM are:

1. Size: SO-DIMM is smaller and more compact than DIMM.
2. Usage: SO-DIMM is commonly used in mobile devices, laptops, and embedded systems where space is limited, while DIMM is typically used in desktop computers.
3. Pin count: While the pin counts are different (240 for DIMM vs 200/204 for SO-DIMM), both types of modules can be used to connect multiple RAM chips together.

In general, SO-DIMM memory sticks are designed for use in portable devices where power consumption and size are critical factors. They offer a compact design while still providing the same level of performance as DIMM memory modules.

To give you an idea of how they're usually used:

• Desktop computers: Typically use DIMM memory modules (e.g., DDR4, DDR3) to provide high-speed RAM.
• Laptops and mobile devices: Usually use SO-DIMM memory modules (e.g., DDR5, DDR4) due to space constraints.
• Server and data center systems: May use both DIMM and SO-DIMM depending on the specific system requirements.

Keep in mind that these are general guidelines, and it's essential to check your device's documentation or manufacturer's recommendations for the correct type of memory module to use.