The difference between DDR3, DDR3L & DDR3U


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Published 21 hours Ago On Sunday, January 29, 2023

Understanding RAM Acronyms:

What is DDR3L:

The ‘L’ acronym in DDR3L RAM means ‘Low Voltage’ RAM. This module can operate at a low voltage of around 1.35V. When configured, DDR3L memory can reduce computer’s power consumption by 15% or more over equivalent 1.5V memory, This is beneficial for mostly servers.

What is DDR3U:

The ‘U’ acronym in DDR3 RAM means ‘Ultra Low Voltage.’ This module can operate at a voltage of 1.25V or lower. When configured, DDR3U memory can reduce computer’s power consumption by 10% compared to DDR3L which has 1.35V. This is beneficial for mostly servers

What is DDR3:

DDR3 RAM is a regular module used in computers, laptops and servers. It operates at a voltage of 1.5V.

Some of the Frequently asked questions about DDR3 RAM Module:

Q1: DDR3 vs DDR3L: Which is better?

The acronym ‘L’ stands for Low Volts. This means DDR3L is a low voltage RAM not low performance RAM, while DDR3 is a standard voltage RAM.

Now, which one is better?

DDR3 is mostly used in PCs because it is low cost, massively available and can support most of the motherboards in the market. DDR3L is not massively available. It can fit in a support built for DDR3, but due to high price people do not opt for this RAM module. Performance wise, both are the same. Energy consumption wise, DDR3L is better than DDR3U.

Q2: Is DDR3L compatible with DDR3 RAM Memory? Can I use both of them together?

Yes, you can use both of them together. Both the DDR3 & the DDR3L RAM Modules can work in a system. but DDR3L will run at standard voltage i.e. 1.5V. To run it at its original voltage, the DDR3L RAM should be used in conjunction with another DDR3L RAM module in a low-voltage supported motherboard.

Q3: What are the specifications of DDR3U RAM Module?

DDR3U Specifications:

  • Voltage: 1.25V
  • Reduces memory power consumption by about 10% over DDR3L RAM Module.

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