Question

Difficulty: MediumRAM Types and Characteristics

A field technician is upgrading the system memory on a high-performance desktop workstation that supports dual-channel DDR4 memory architecture. The motherboard features four memory slots labeled Slot 1, Slot 2, Slot 3, and Slot 4, organized into two separate memory channels (Channel A: Slots 1 & 2; Channel B: Slots 3 & 4). Which TWO of the following configurations or requirements must be met to ensure the system operates in dual-channel mode? (Select TWO.)

  1. Install matched memory modules across both Channel A and Channel B (such as Slot 1 and Slot 3).Answer
  2. Ensure the installed memory modules have identical capacities, clock speeds, and timing specifications.Answer
  3. C
    Populate adjacent slots within the same single channel (such as Slot 1 and Slot 2) to activate dual-channel bus speeds.
  4. D
    Utilize 260-pin SO-DIMM modules to fit into the standard desktop motherboard memory expansion slots.

Answer

To enable dual-channel memory architecture, the technician must populate matching slots across both memory channels (e.g., Slot 1 in Channel A and Slot 3 in Channel B) and use memory modules with identical capacity, speed, and timing specifications.
Dual-channel memory operation requires installing matching memory modules across different memory channels (e.g., one in Channel A and one in Channel B) with identical capacity, clock speed, and timing characteristics.

Step-by-Step Solution

1
Identify memory channel slot configurations in the motherboard documentation.
Determine that Channel A consists of Slots 1 & 2 and Channel B consists of Slots 3 & 4.
Populating one module in Channel A and one module in Channel B is necessary to split memory throughput across two independent 64-bit buses.
2
Select matching DDR4 DIMM memory modules.
Verify that both modules match in form factor (288-pin DIMM), capacity, speed, and latency.
Mismatched specifications or improper channel population force the memory controller to downclock or default to single-channel operation.

Key Concept

Dual-Channel Memory Slot Population and Matching Module Specifications
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