COMPTIA A+ Practice Exam 2026 – 400 Free Practice Questions to Pass the Exam

PC2-8500 is a type of DDR2 memory, and the numbers in DDR2 refer to the memory's speed or frequency. A higher frequency means faster data transfer and better performance. PC2-8500 specifically refers to DDR2-1066, which has a frequency of 1066 MHz. This makes it the fastest option among the given choices.

A (DDR-400) and B (DDR2-533) are both slower in frequency compared to PC2-8500. C (DDR2-800) is faster than A and B, but still not as fast as PC2-8500. Therefore, D (DDR2-1066) is the only correct option.