[SOLVED] RAM sticks voltage source

Jul 3, 2020
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Which rail the memory modules get their voltage from? I know that DDR4, for example, uses 1.2V (reference), but they get that voltage from the 3.3, 5 or 12V? If anyone could link to any source explaining how the different voltages are used by the PC components in detail it would be awesome. Thanks in advance.
 

jay32267

Illustrious
Here is a general guide.

  • +3.3 V: Chipsets, DIMMS, PCI/AGP/PCIe cards, and miscellaneous chips
  • +5 V: Disk drive logic, low-voltage motors, SIMMs, PCI/AGP/ISA cards, and voltage
  • +12 V: Motors, high0output voltage regulators, and AGP/PCIe cards
 

jay32267

Illustrious
Here is a general guide.

  • +3.3 V: Chipsets, DIMMS, PCI/AGP/PCIe cards, and miscellaneous chips
  • +5 V: Disk drive logic, low-voltage motors, SIMMs, PCI/AGP/ISA cards, and voltage
  • +12 V: Motors, high0output voltage regulators, and AGP/PCIe cards
 

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