Buzz
1. What is RAM?
RAM is an abbreviation for Random Access Memory, the memory responsible for random data access. When launching any software on a laptop, data is transferred from the hard drive to RAM and then to the CPU for processing. Subsequently, the data is stored back on the hard drive.
Data on RAM is stored in individual memory cells, each cell having a unique address. Each memory cell has equal time for reading and writing data.
2. Structure of RAM
Processing Unit
Unlike asynchronous DRAM, Synchronous Dynamic Random-Access Memory (SDRAM) operates synchronously with the processor to streamline the control interface and eliminate unnecessary signals.
Motherboard
The motherboard is a circuit board containing all components of RAM. It facilitates the connection between the computer and memory through silicon semiconductor circuits.
Counter
The counter on the SPD chip helps monitor column addresses for high-speed access. This counter often utilizes two alternating and sequential sets.
SPD Chip
The SPD chip in SDRAM on the motherboard contains information about timing, memory type, size, and access speed. This chip allows the computer to access this information.
Memory Bank
This component contains modules to store data. SDRAM typically has two or more memory banks allowing access and different banks.
3. Common Types of RAM
Currently, RAM is divided into 2 common types: DRAM and SPRAM. Among them:
- SRAM, also known as Static RAM (SRAM), does not lose content when the computer starts. SRAM is often used to store boot-up data.
- Dynamic Random Access Memory (DRAM), commonly known as RAM, is used to temporarily store data for applications running on a computer. DRAM can release memory when closing applications or turning off phones and computers.
Some common types of dynamic RAM:
- Synchronous Dynamic RAM (SDRAM), also known as synchronous RAM
- DDR: an improved version of SDR with 184 pins
- DDR2: An upgrade from DDR with 240 pins, significantly faster than DDR, used for older computers.
- DDR3: High-speed RAM, currently widely used on computers
- RDRAM: also known as RAM bus, manufactured based on newer technology compared to previous generations.
- DDR4: introduced in 2014, replacing DDR3, uses low voltage of only 1.2V with transmission speeds ranging from 2133-4266 MHz.
4. Specifications on RAM
- DDR3 Synchronous Dynamic RAM (abbreviated as DDR3): DDR stands for Double Data Rate – doubling the data transfer rate, allowing one clock cycle to transmit two blocks of data, doubling the data transfer speed. DDR3 uses synchronous data bus signaling.
- Capacity: The amount of data that RAM can store. Users can choose different RAM capacities according to their needs, such as 4GB, 8GB, etc.
- ECC (Error Checking and Correction): a fundamental component in server systems. ECC has two types of memory, registered ECC and unbuffered ECC.
- Bus: a collection of many small electrical conductors. This is a system of pathways used to carry data between components in a computer such as IO devices, CPU, memory.
- CAS or Latency: The time counted from when the command line is sent down to the RAM stick until feedback to the CPU.
- Refresh Rate – Refresh Frequency: Server RAM is composed of hundreds of electronic cells. To store data, each of these cells needs to be charged thousands of times per second. Therefore, dynamic memories always have a refreshing process. This process is called refreshing.
5. Tips when buying laptop RAM
Type of RAM
When choosing RAM, pay attention to the RAM type. If you use DDR RAM, it's advisable to match them in pairs. For instance, using a 4GB BUS 3200 RAM, when adding another RAM, it should have the same specifications. This ensures stability and maximizes computer performance.
RAM Quantity
If you want to add 8GB of RAM, it's recommended to install 2 RAM sticks, each being 4GB of the same type, rather than a single 8GB stick.
6. How much RAM is suitable for a laptop?
Modern laptops come equipped with 4GB of RAM, higher-end models have 8GB, and premium laptops can have anywhere from 12 to 16GB.
If your needs involve email, web browsing, and some light gaming, then 4GB of RAM is a suitable choice.
In case you want to engage in professional graphic design, video editing, or 3D gaming, then a RAM capacity of 8GB or more is a fitting choice.
Explore the insights on RAM and essential considerations when buying laptop memory. Save this for reference and application. For any inquiries related to laptops or to place an order, visit Mytour's store or contact the hotline at 1900 6788 for expert advice and ordering.
