What is DDR4 Memory?

DDR4 stands for "Double Data Rate 4", and it's a type of memory (RAM) used in modern computers. RAM is short-term memory that your computer uses to quickly access data. The faster your RAM, the better your computer can handle multiple tasks at once.

What Are Memory Timings?

Memory timings are a set of numbers that show how quickly the memory responds to commands. You might see something like 16-18-18-38 on a DDR4 RAM stick. These numbers represent:

• CAS Latency (CL): The time it takes for the memory to start sending data after a command.
• tRCD (RAS to CAS Delay): Time between row and column commands.
• tRP (Row Precharge Time): Time needed to close one memory row before opening another.
• tRAS (Active to Precharge Delay): Minimum time a row needs to stay open before it can be closed.

Why Do Timings Matter?

Lower numbers usually mean faster memory performance. However, memory speed also depends on the frequency (measured in MHz), so both timing and speed are important.

Balancing Speed and Timings

When choosing DDR4 RAM, look for a balance between high frequency (like 3200 MHz or 3600 MHz) and low timings (like CL16). That way, you get fast and responsive performance.

Conclusion

DDR4 memory timings may seem confusing at first, but they're just measurements of how fast your RAM can respond to commands. Understanding them helps you make better choices when upgrading or building a PC.