IBM Computer RAM 128 MB Capacity per Module

Expand the Memory Capacity in your Computer with 128MB of IBM RAM

RAM, which stands for random access memory, determines how many programs and files you can have open at the same time. These 128MB modules from IBM will expand the amount of memory in your computer, so you can have more open programs. This can help when you need multiple programs open for work, or several websites open for a school project.

Since the 1990s, there have been two main types of RAM: they are known as SDRAM and DDR RAM. SDRAM, which stands for synchronous dynamic random-access memory, is synchronized with the clock speed of the CPU. This confers numerous performance benefits, as the CPU no longer has to wait around for the RAM to send data. Synchronous RAM will send data as the CPU requests it.

The second type of RAM is known as DDR, which stands for double data rate. DDR technology is used in conjunction with SDRAM to improve the bandwidth of the RAM. Whereas standard SDRAM can only transmit data once per clock cycle, DDR SDRAM can transmit data twice per clock cycle. So, if the clock speed otherwise remains the same, DDR SDRAM could transmit twice the amount of data. There are four generations of DDR technology. Each new generation of DDR can transmit more data than the generation before it.

The module forms the electrical and physical connection with the computer's motherboard. Each type of RAM will have a different physical size and a different number of pins. Make sure that the IBM module matches your computer's motherboard.

• DIMM: DIMM, which stands for dual in-line memory module, is the most common type of module in desktop computers.
• SO-DIMM: SO-DIMM, which stands for small outline dual in-line memory module, is approximately half the physical size of DIMMs. This makes them suitable for laptops and other small form factor devices.
• SIMM: SIMMs, or single in-line memory modules, were commonly used in the 1980s to the late 1990s before they were superseded by DIMMs. SIMMs have redundant, rather than unique, contacts on both sides of the module.

Yes,a specially designed ECC module, which stands for error-correcting code, can identify and correct for errors in the data. Error correction is normally designed specifically for technical applications in which small errors in the data could cause problems.

If you are combining multiple modules together in your motherboard, then you will want to make sure that you are using the same type of RAM. SDRAM is not compatible with DDR SDRAM, despite their similarities. Moreover, different generations of DDR SDRAM are not compatible with each other. Only DDR1 modules can be combined together. The same is true for DDR2, and so on.