2rx4 4rx4什麼意思

The terms "2rx4" and "4rx4" are often used in the context of computer hardware, specifically with regard to memory modules (RAM) and expansion cards. Here's what they mean:

2rx4: In the context of RAM modules, "2rx4" refers to the number of ranks and the organization of the memory chips.

• The "2r" indicates that there are two ranks. A rank is a set of memory chips that are accessed simultaneously. More ranks can potentially provide better performance by allowing more data to be accessed in parallel.
• The "x4" refers to the data width of each memory chip. In this case, each memory chip has a 4-bit data path. When multiple chips are combined, they can provide a wider data path (e.g., if there are four chips, they would provide a 16-bit data path).

4rx4: Similarly, "4rx4" indicates that there are four ranks of memory, with each memory chip having a 4-bit data path. This configuration provides more ranks than the "2rx4" configuration, which could lead to better performance, especially in systems that can take advantage of multiple memory channels.

In the context of expansion cards (like graphics cards), "4rx4" might refer to the number of lanes and the PCI Express (PCIe) version. For example, "4x PCIe 3.0" would mean that the card uses four lanes of PCIe 3.0, which is a standard for high-speed data transfer between the motherboard and the card. However, this interpretation is less common in the context of RAM modules.

Always check the specifications of the hardware or the documentation provided to understand the exact configuration and how it might affect the performance of your system.