Question

Difficulty: MediumRAM Types and Characteristics

A desktop technician is servicing hardware for a creative design firm and needs to upgrade memory across both laptop mobile workstations and desktop systems. Which TWO of the following statements correctly identify key RAM form factors and dual-channel installation rules for these platforms?

  1. Mobile workstations utilize SO-DIMM modules, which have a smaller physical footprint and distinct pin keying compared to desktop DIMMs.Answer
  2. To achieve dual-channel memory performance on desktop motherboards, matching modules must be installed into designated slot pairs according to motherboard specifications.Answer
  3. C
    Standard full-sized desktop DIMM modules can be installed into laptop expansion slots as long as the memory generation and operating voltage match.
  4. D
    Dual-channel memory throughput is automatically enabled whenever two RAM modules are placed side-by-side in adjacent motherboard slots.

Answer

The statement that mobile workstations utilize SO-DIMM modules with a smaller physical footprint, and the statement that dual-channel performance requires installing matching modules into designated slot pairs, are both correct.
Mobile workstations require SO-DIMM modules due to compact physical dimensions. For dual-channel operation, motherboard manufacturers require installing identical memory sticks into specific channel-separated slots, which provides twice the bus bandwidth compared to single-channel mode.

Step-by-Step Solution

1
Identify the form factor requirement for mobile workstations versus desktop motherboards.
Laptops and mobile workstations require SO-DIMM form factors due to spatial constraints, whereas desktop computers use full-sized DIMMs.
SO-DIMMs and standard DIMMs have different dimensions and pin configurations, rendering desktop DIMMs incompatible with laptops.
2
Analyze the configuration criteria for enabling dual-channel memory operation.
Modules must be installed in alternating or manufacturer-specified slot pairs (such as Slot A1 and Slot B1) across separate channels.
Installing modules into adjacent slots on standard four-slot motherboards often populates a single channel, failing to activate dual-channel bus architecture.

Key Concept

RAM Form Factors and Dual-Channel Slot Population
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