[SOLVED] RAM sticks voltage source

[leonsk29]

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]

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