What Is the Difference Between DDR1 & DDR2 RAM?

Faster computers require faster RAM, and more of it.

RAM is essential to computer operation, especially speed. A fast computer needs an adequate amount of fast RAM. DDR RAM doubled the speed of previous RAM types and is now common in computers.

RAM

RAM, or random access memory, is a volatile, fast memory. Volatile memory only operates when it is powered, so data stored in RAM is lost every time a computer is turned off.

DDR

DDR stands for double data rate. This means that it can transmit data twice as fast as the older, single data rate RAM.

DDR1

DDR1 RAM was the first type of double data rate RAM. It was a big advance over SDRAM, transferring data twice as fast as the computer's FSB, or front side bus.

DDR2

DDR2 RAM also transfers data twice as fast as a computer's FSB speed, but it is compatible with computers with higher FSB speeds.

Advantages

DDR2 RAM consumes less power than DDR1 RAM, so it operates at a lower temperature. RAM temperature increases with its speed, so DDR2 RAM can run faster than DDR1 RAM, while remaining cooler.

References

• Upgrade Memory: DDR1 vs DDR2
• Indiana University Information Technology Database: What is RAM