单选题A technician is performing a memory upgrade by installing an additional 1GB stick of DDR RAM into a system. When the installation is complete, the computer shows 2GB of RAM at POST; however, it now indicates a lower speed setting for the memory. Which
题目
单选题
A technician is performing a memory upgrade by installing an additional 1GB stick of DDR RAM into a system. When the installation is complete, the computer shows 2GB of RAM at POST; however, it now indicates a lower speed setting for the memory. Which of the following is the MOST likely cause?（）
A
The newly installed RAM has a lower clock speed than the existing RAM.
B
The CPU is not configured to work with the additional RAM.
C
The system is incompatible with the new RAM.
D
The new RAM is of lower quality, and not dependable at higher speeds.
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