Which motherboard component historically managed high-speed communications between the CPU, RAM, and primary PCIe graphics slots before its functions were integrated directly into the CPU die?
Answer and explanation
Correct answer: D. Northbridge
- Step 1: In traditional PC motherboard chipset design, the core logic was split between two primary chips: the Northbridge and Southbridge.
- Step 2: The Northbridge connected directly to the CPU via the Front Side Bus (FSB) to handle memory and graphics; modern CPU designs now integrate memory controllers and PCIe lanes directly on the processor silicon.
Answer
Northbridge
Why not the others: 'Southbridge' The Southbridge managed lower-speed I/O interfaces, including SATA ports, USB controllers, PCI slots, and audio chips; 'Super I/O chip' The Super I/O chip handles legacy low-speed ports such as serial RS-232, parallel printer ports, and PS/2 keyboards; 'Real-Time Clock (RTC)' The RTC is a crystal-oscillated circuit that maintains the current calendar time and date when the system is powered down.
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