Memory Cards & Modules Definition

Memory modules and memory cards are key parts of computer hardware, used for temporary storage and fast data access. They fit into the motherboard’s memory slots. Common types are DDR, DDR2, DDR3, and DDR4, each with different capacities and speeds that influence the computer’s overall performance.

Memory cards are electronic storage devices used on a PC board to store or transfer digital information. They can be easily inserted and removed.

Types of Memory Modules

• TransFlash Memory Module
• SIMM (Single In-Line Memory Module)
• DIMM (Dual In-Line Memory Module)
• RIMMs (a subset of DIMMs, typically called Rambus memory modules)
• SO-DIMM (Small Outline DIMM) – a smaller version of DIMM, used in laptops

DRAM Modules

DRAM modules are circuit boards with a collection of dynamic random access memory (DRAM) chips.

DRAM chips

DRAM chips are single-transistor dynamic memory cells that store bits in a row-and-column addressable configuration using capacitors. These chips are a type of random access memory (RAM) that need to be regularly charged or refreshed to keep data.

Since DRAM modules are dynamic memory devices, they need a power source to retain their data. This is why DRAM modules use volatile memory. In contrast, static memory doesn’t need capacitor replacement and retains data in flash memory even without power.

Different types of DRAM modules are available, such as FPM (fast page mode), EDO (extended data out), and SDRAM (synchronous DRAM), each with unique properties.

Examples of DRAM modules include:

• Micro Technology Inc. MT16HTF51264HZ-800C1
• ATP Electronics, Inc. AL12P72L8BKK0M
• ATP Electronics, Inc. AW12M64B8BLK0MW
• Advantech Corp AQD-SD3L2GN16-SQ
• Wintec Industries 96D2-1G667NN-TRL
• Swissbit SFUI2048J1AB1TO-I-GS-2AP-STD
• Apacer Memory America 78.D2GF2.4010

Frequently Asked Question

What is a memory module card?

A memory module, often called RAM (Random Access Memory), is a vital part of a computer that stores data temporarily. It helps your computer quickly access and retrieve information needed to carry out tasks. The more RAM you have, the better your computer performs.

What is the function of the memory module?

In computing, a memory module or RAM stick is a printed circuit board with memory integrated circuits mounted on it. These modules make it easy to install and replace memory in electronic systems, especially in computers like personal computers, workstations, and servers.

What is a memory card in a computer?

A memory card is a portable storage device used in various electronic gadgets like digital cameras, smartphones, tablets, and gaming consoles. It’s designed to store and transfer data like photos, videos, music, and documents.

Where are the memory modules?

Memory modules are plugged directly into the motherboard, so they're always inside the computer case. To reseat the memory, you need to turn off the computer and open the case to access the modules. Computers usually come in tower-sized or desktop-sized models.