TestOut LabSim A+ Certification Practice Exam

What is an advantage of DDR3 over DDR2?

1. DDR3 is larger in size

2. DDR3 has similar power consumption

3. DDR3 doubles the data transfer rate of DDR2

4. DDR3 is only compatible with older motherboards

The correct answer is: DDR3 doubles the data transfer rate of DDR2

The advantage of DDR3 over DDR2 that stands out is that DDR3 doubles the data transfer rate of DDR2. DDR3 achieves this by utilizing a wider interface and higher clock speeds, which allows it to process more data per cycle compared to its predecessor. This enhanced bandwidth is particularly beneficial for applications that require high data throughput, such as gaming, video editing, and large-scale computations. The context around this is important as well. While other options may touch upon related characteristics, they do not highlight the principal technological advancement that DDR3 offers in performance. For example, DDR3 is indeed designed to be more efficient in terms of power consumption compared to its predecessors, but it does not have similar power consumption; it typically operates at a lower voltage. Regarding compatibility, DDR3 is not suitable for older motherboards designed for DDR2, which means it cannot be used interchangeably with them. Lastly, the statement about size does not specifically provide an advantage; rather, both DDR2 and DDR3 modules can be similar in physical size but differ greatly in their internal technology and performance capabilities. Thus, the remarkable leap in data transfer rates does indeed make DDR3 a much more advanced option.