Two Critical Factors to Consider When Choosing RAM for Your Computer

Expanding your computer’s RAM capacity may appear straightforward at first, but there are factors beyond the manufacturer, capacity, and frequency that can affect compatibility. In this article, we’ll explore two crucial factors to consider when choosing RAM: the number of memory chips on each module and the presence of error correction technology.

Number of Memory Chips per Side


RAM modules often come with heat sinks, which can obscure the number of memory chips on the PCB (Printed Circuit Board). The number of memory chips on each side of a module is a significant factor, but it is not commonly listed on product specifications. Understanding this parameter is essential to avoid potential incompatibilities.

There are three general configurations:

  • 1Rx8: This indicates eight memory chips on a single side of the RAM module. It is suitable for both NON-ECC and ECC memories.
  • 2Rx8: This configuration signifies eight memory chips on each side of the RAM module and is compatible with both NON-ECC and ECC memories.
  • 2Rx16: Exclusive to ECC memories, this configuration indicates sixteen memory chips on each side of the module.

Knowing the number of chips helps determine the capacity of each chip. For example, an 8GB module with a 1Rx8 configuration suggests that each memory chip has a capacity of 1GB. In contrast, a 2Rx8 configuration indicates 512MB per chip. This information provides insight into the quality and potential compatibility issues, particularly in older DDR3 systems.memory ram gaming ddr4 1rx8

Error Correction Technology (ECC)

Error Correction Code (ECC) RAM is not commonly used in consumer or gaming systems but is prevalent in servers and data centers. ECC memory includes an additional chip responsible for detecting and correcting errors in data chains. It is essential for maintaining system stability in professional environments, where a single bit inconsistency can lead to catastrophic failures, such as a blue screen.

Distinguishing ECC from NON-ECC memory is relatively straightforward. ECC memory is typically marked and identified, comes with heat sinks, and is more expensive, costing between 20-40% more than non-ECC counterparts. Installing ECC memory in a consumer or gaming system will not cause operational problems; the motherboard will recognize it as NON-ECC and forego error correction.


While the number of memory chips per side and the presence of ECC technology may seem like additional considerations when selecting RAM, modern DDR4 systems have largely resolved compatibility concerns associated with the number of chips. However, it is essential to be aware of these factors, particularly when dealing with older systems that lack automatic management. When it comes to ECC memory, you can install it in a gaming motherboard without encountering operational issues, as it will be recognized as NON-ECC memory.