RAM is the working area for the processor. When the computer is running, it stores data, as well as programs that are currently running. Random access memory is only temporary storage, since after restarting or shutting down the computer, all the data that is in it is deleted. When choosing RAM, you should pay attention to the following characteristics.
Instructions
Step 1
RAM type. The first step is to determine what type of memory your computer's motherboard supports. Modules of one type of RAM cannot be inserted into slots that are intended for a different type. Therefore, the modules are made in various form factors:
DDR - today this type of RAM is outdated, it is practically not used in modern computers.
DDR2 is the most common type of memory at the moment. DDR2 is capable of transferring 4 bits of data per cycle from the cells of the RAM chip to the I / O buffer. This module has 240 pins, and its standard supply voltage is 1.8 V.
DDR3 is a new type of memory. It allows you to transfer 8 bits per clock. Its module is made in the form of a board with 240 pins, but the power consumption is 40% less compared to DDR2, which is quite important for mobile systems and laptops.
Step 2
Bandwidth.
Your computer will run faster if the RAM bus bandwidth matches the processor bus bandwidth. Also, when installing two memory modules, the computer can use dual-channel mode (it is necessary that both RAM modules work at the same frequency). Modern motherboards have the ability to use three-channel mode, in this case it is necessary to connect three DDR3 RAM modules.
Step 3
The amount of RAM.
The most popular modules are 512MB, 1GB, 2GB. Your choice will depend on what you need a computer for. For example, if you only use your computer for office purposes, then 1GB is enough, but for gamers you need at least 2GB.
