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Zorluk: OrtaExpansion Cards and Power Supplies

A desktop technician is upgrading a workstation by installing a dedicated 250 W graphics expansion card alongside a high-performance multi-core CPU. Which of the following steps must the technician take to ensure proper power delivery and overall system stability? (Select TWO.)

  1. Calculate total power supply requirements by summing the peak power draw of all components including CPU and GPU, plus an overhead safety margin.Cevap
  2. Connect dedicated 6+2 pin or 8-pin PCIe power cables directly from the power supply unit to the graphics card auxiliary power connectors.Cevap
  3. C
    Determine power supply capacity based exclusively on the CPU thermal design power rating while ignoring dedicated graphics card power specifications.
  4. D
    Rely entirely on the motherboard 24-pin ATX connector to supply all 250 W of power to the expansion card through the PCIe slot.

Cevap

The technician must calculate total power requirements by summing the peak power consumption of all hardware components plus an overhead margin, and connect dedicated 6+2 pin or 8-pin PCIe auxiliary power cables directly from the power supply to the graphics card.
Accurately calculating PSU capacity requires summing peak consumption across all components including CPU and GPU with a safety overhead margin. Because PCIe expansion slots provide only up to 75 W, high-demand expansion cards must be connected directly to the PSU via 6+2 pin or 8-pin PCIe auxiliary power cables.

Adım Adım Çözüm

1
Calculate total system wattage demand.
Add the CPU wattage, graphics card peak draw (250 W), storage drives, and fan power, then apply a 20–30% overhead margin.
Ensures the power supply unit can handle peak transient power demands without shutting down.
2
Identify motherboard PCIe slot power limitations.
Recognize that the motherboard slot delivers up to 75 W maximum, leaving 175 W to be supplied separately.
High-end graphics cards cannot function on slot power alone.
3
Attach auxiliary PCIe power cables.
Connect dedicated 6+2 pin or 8-pin PCIe power leads directly from the PSU into the graphics card power headers.
Supplies dedicated +12V power directly to the card to fulfill its high wattage requirements.

Anahtar Kavram

PCIe expansion card auxiliary power requirements and PSU wattage capacity calculation
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Konular

Expansion Cards and Power Supplies

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