Which of the following components of a motherboard is responsible for communications between CPU and RAM?

The correct answer is A. North Bridge. In traditional motherboard chipset architecture, the North Bridge (also called the Memory Controller Hub) manages high-speed, high-bandwidth communication between the CPU, RAM (system memory), and the PCIe graphics slot. These components require fast data transfer, so the North…

Hardware

Question

Which of the following components of a motherboard is responsible for communications between CPU and RAM?

Options

ANorth Bridge
BSouth Bridge
CPCIe slot
DCMOS battery

How the community answered

(28 responses)

A
89% (25)
C
7% (2)
D
4% (1)

Explanation

In traditional motherboard chipset architecture, the North Bridge (also called the Memory Controller Hub) manages high-speed, high-bandwidth communication between the CPU, RAM (system memory), and the PCIe graphics slot. These components require fast data transfer, so the North Bridge sits directly between them. The South Bridge (I/O Controller Hub), by contrast, handles slower peripherals such as USB, audio, SATA storage, and PCI slots. The PCIe slot is an expansion interface (not a communication bridge), and the CMOS battery simply powers the real-time clock and BIOS settings when the system is off. Note: modern CPUs have integrated the memory controller on-die, making a discrete North Bridge obsolete, but for exam purposes this remains the correct answer.

Topics

#North Bridge#motherboard chipset#CPU-RAM communication#chipset architecture

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