CompTIA A+ Core 1 (220-1201) — Question 179

Which of the following characteristics differentiates DDR4 RAM from DDR3 RAM?

Answer options

• A. Lower operating voltage
• B. Higher latency
• C. Increased DIMM width
• D. Single-sided modules

Correct answer: A

Explanation

The correct answer is A, as DDR4 RAM operates at a lower voltage compared to DDR3 RAM, which contributes to improved power efficiency. Options B, C, and D are incorrect; DDR4 typically has lower latency than DDR3, DIMM width has not significantly changed, and both types can have single or double-sided modules.