What is RAM?
RAM, or Random Access Memory, is the computer's temporary storage space. It holds data and program instructions that the CPU is actively using. Think of it as your computer's short-term workspace or desktop. The faster and bigger your RAM, the more efficiently your computer can multitask and handle complex applications.
Key Characteristics
Capacity
Measured in GB. More GB means more multitasking.
Speed
Measured in MHz. Higher MHz for faster data access.
Type
DDR (Double Data Rate) is the standard. Most systems use DDR4 or DDR5.
Volatility
Data is lost when the power is turned off.
DDR4 vs. DDR5
DDR5 is the newest generation of RAM, offering significant improvements over DDR4.
- Higher Speeds: DDR5 starts at much higher base speeds (4800 MHz) compared to DDR4 (2133 MHz), which allows for faster data processing.
- Increased Bandwidth: With a more efficient architecture, DDR5 provides greater bandwidth, meaning it can transfer more data at the same time. This is particularly beneficial for high-performance computing, gaming, and content creation.
- Improved Power Efficiency: DDR5 operates at a lower voltage, which reduces power consumption and heat generation.
How it Works
RAM acts as a temporary buffer between your CPU and your long-term storage (like an SSD or HDD). When you open an application, its files are loaded from the slow storage drive into the fast RAM. The CPU then works directly with the data in RAM.
A visual representation of a RAM stick.
Storage Drive (🗄) ➡ RAM (🧠) ➡ CPU (💻)