DDR3 Memory vs DDR2 Memory

When it comes to build up a new computer, you need to choose the components one by one. Processor, motherboard, hard disk are some of the key components of a computer system. RAM or Random Access Memory is equally important. Now the question arises whether to go for DDR2 or DDR3. DDR3 memory is the latest launch in the market. But is it ok to go with this version of memory? This article has been designed to give you some idea on which memory to choose. If you need tech support for computer repair, consult an expert.

DDR3 is the best choice. It uses "fly-by" technology while DDR2 RAMs uses the "T branches". "Fly-by" is the latest technology and it employs automatic signal time delay created by the controller fixed at the memory system training. There is an automatic leveling circuit in the DDR3 DRAM chip for standardization and to memorize the standardization data.

There has been significant improvement in terms of usage of memory voltage in the last couple of years from 2.5V with DDR to a notable improvement in DDR2 with 1.8V. And with DDR3 it is just 1.5V. This means 16% decrease from its predecessor. Further, this module of memory also features additional built-in power conservation features. For laptops, this is really a very useful feature.

DDR2 Specifications

DDR2 memory is the second generation in DDR memory. DDR2 begins with a speed level of 400MHz as the lowest available while the 400MHz speed is actually the highest speed for DDR1. Therefore, DDR2 picks up where DDR1 leaves off. It's a bit strange but due to different latencies a 400MHz DDR1 will outperform a 400MHz DDR2, but the advantage returns to DDR2 as soon as the speed reaches the next step 532MHz, which DDR1 cannot reach.
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DDR3 Specifications

DDR3 is the third generation in DDR memory. DDR3 begins with a lowest capacity level of 800Mbps and goes up to 1600Mbps with bus speed as high as 2000MHz. Higher performance with lower power consumption is the major benefit, since operating voltage is only 1.5V for DDR3 compared to 1.8V for DDR2. Lower heat is generated, which means that systems will run cooler. Ultimately the new technology will result in higher capacity modules: Up to 8GB modules (Using 4Gb Chips) to help lower server/workstation system costs.

source : http://ezinearticles.com/