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1. Main Memory (also known as Internal memory can be divided into 2 types which are
- Read Only Memory (ROM) is a memory that contains programs or data that can be called out, but can not be written more.And even without power to the system, data is not lost.
- RAM (Random Access Memory) is a memory that can store data only when the electricity is nourished. When there is no electricity to feed, the data in this type of memory will disappear immediately.
2. Secondary memory or external memory is a type of memory that requires data storage media and data transfer devices, including
2.1 Hard Disk (Hard Disk) is a hardware that stores data in a computer. Including various applications, files, documents, as well as storage of operating systems that control the operation of the computer
2.2 Solid State Drive (SSD) is a type of storage device. That changed from a magnetic disk to a Flash Memory, which is similar to the storage of Flash Drive to store data like Harddisk. SSD technology was created to replace the hard disk. Resulting in an interface Input / output Are the same and can be used interchangeably, and because SSD is designed by electronic circuits Therefore there are no moving parts Resulting in impact resistance Or the vibrating force is good Because there is no spinning disk inside And can also read, write data more than 10 times faster than a rotating disk hard disk and consume less electricity
SSDs are divided into many types such as
- The SATA III type is a standard SSD. It will be connected to the same size 2.5 inch HDD suitable for computers. And general notebooks
- MSATA is an SSD that has the same speed as SATA III, but smaller to use for Ultra-thin Notebook, Tablet PC to have better performance.
- M.2 type. It is another form of SSD. That has been redesigned and the new interface With the special M.2 that is several times more efficient than SATA And now there are 3 sizes, 2242, 2260 and 2280. These numbers will indicate the width and length of the SSD. For example, 2280 is the SSD, the width is 22 MM and the length is 80MM and This point is also important. Because we have to check the slots on our motherboard that What is the maximum supported length?
- PCIe type, designed to be inserted into a PCI Express x16 slot for improved performance and performance.
- M.2 NVMe is the latest technology for SSDs today, but there are newer computers or notebooks. Only NVMe supports *. (NVMe, also known as MVM Express, which stands for Non-Volatile Memory Express, is a technology that provides connectivity Data transmission from SSD directly to the CPU)
Buying memory
1. Should choose the right to use with RAM should have a capacity of at least 8 GB and the hard disk should have a capacity of at least 500GB - 1TB.
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