DDR2 SDRAM facts for kids
DDR2 SDRAM is a type of computer memory. Think of it as a super-fast temporary storage space inside your computer. It helps your computer run programs and open files quickly. DDR2 stands for Double Data Rate and it's the second version of this technology.
How is DDR2 Different?
DDR2 is an improved version of older DDR memory. The biggest difference is how fast it can send and receive information. DDR2 can move data twice as fast as the original DDR memory. This means your computer can get information from the memory much quicker. It's like upgrading from a slow road to a super-fast highway for data!
Types of DDR2 Memory
DDR2 memory comes in small circuit boards called DIMMs. These DIMMs have 240 pins and a special notch to make sure they fit correctly into your computer. Each type of DDR2 memory is named by how much data it can move per second. This is also called its bandwidth.
| Standard name | Memory clock | Cycle time | I/O Bus clock | Data transfers per second | Module name | Peak transfer rate |
| DDR2-400 | 100 MHz | 10 ns | 200 MHz | 400 Million | PC2-3200 | 3200 MB/s |
| DDR2-533 | 133 MHz | 7.5 ns | 266 MHz | 533 Million | PC2-4200 | 4266 MB/s |
| DDR2-667 | 166 MHz | 6 ns | 333 MHz | 667 Million | PC2-5300 | 5333 MB/s |
| DDR2-800 | 200 MHz | 5 ns | 400 MHz | 800 Million | PC2-6400 | 6400 MB/s |
| DDR2-1066 | 266 MHz | 3.75 ns | 533 MHz | 1066 Million | PC2-8500 | 8533 MB/s |
Images for kids
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PC2-5300 DDR2 SO-DIMM (for notebooks)
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DDR2 P vs F Server DIMM's Notch Positions compared
See also
In Spanish: DDR2 SDRAM para niños
