SODIMM memory is a type of Random Access Memory (RAM) that typically is used with small devices that are trying to conserve space. They are a smaller version (about half the length) of DIMM memory, which is the dominant method of equipping computers with RAM. SODIMMs are usually used for devices like laptops, printers or routers, among other things. They generally perform about as well as DIMMs, they only major difference being in size. In general, laptops use SODIMMs and desktop computers use DIMMs, although some smaller desktops use SODIMMs as well. The additional space that DIMMs consume is much less of a problem in desktop computers.

SODIMM stands for small outline dual inline memory module, as opposed to dual inline memory module (DIMM). Other than size, there is no real benefit or disadvantage to either type of memory. However, because of their advantage in size, desktop computers can, and often do hold more memory than laptops. DIMMs often carry more memory, in terms of volume, than SODIMM, and in many cases, DIMMs come in packages of two, because desktops can hold them. Most laptops, on the other hand, can only hold one memory upgrade, which gives desktops their inherent advantage in memory.

SODIMMs are built in three variants that can be easily distinguished visually. These are distinguished by the number of pins: 100-pin models, which have two notches, and 144-pin and 200-pin models. Although it seems like they’d be easily distinguishable, their defining characteristic is not in their number of pins, but in how many notches they have and the location of those notches. In the 144-pin model, the notch is usually near the center, while in the 200-pin model, the notch is more to the side of the memory card. These aren’t universal rules, but they are how the two different models usually operate. It’s important to know how many pins your computer can accept, because that will dictate whether you can fit it into the right slot.

When looking at the pen number, the major thing to remember is that 72 and 100 pin memory cards only work with 32 bit operating systems. 144 or more pens also support 64-bit systems. If you don’t know which you have, you can find that information by right-clicking on “My Computer” in a Windows OS, and selecting properties. Most operating systems, even today, are 32 bits, but you should make sure before buying additional memory, as that can render cards with lower pin numbers useless to your system.

SODIMM and DIMM are not to be confused with different types of RAM, like DDR, DDR2 or SDRAM. The latter are types, or formats of memory, while the former are the modules that the memory is stored on. SODIMMs with different pin numbers can support different types of RAM. However, these types of RAM are not interchangeable. You can’t replace a memory card with DDR memory with another that has DDR2 memory; it won’t work. In most of these cases, the different types of memory cards will be built slightly differently to prevent confusing the two, but that is not always the case.

When buying SODIMM memory cards, the price can range between $40 and over $100. Most of these memory cards range between 1 and 2 gigabytes of RAM. That’s not as much as many laptops have to begin with, but provided that the laptop can accept and upgrade, it will be a significant increase. If you don’t know whether you need more RAM, the most important thing to consider is how much your computer slows down when you’re running lots of different applications. If this isn’t your problem, a new SODIMM memory card might not solve your problem at all.

This SODIMM Memory Review is Written/Updated on Apr 23rd, 2010 and filed under Computer Hardware. Both comments and pings are currently closed.

Comments are closed