Look closer at the dashed lines on AlephZero's DDR picture. The notches are not lined up exactly.biferi said:
The main difference between DDR 140 pin and 248 pin DIMMs is the number of pins they have. DDR 140 pin DIMMs have 140 pins, while DDR 248 pin DIMMs have 248 pins. This difference in pin count is due to the different form factors and layouts of the two types of DIMMs.
No, DDR 140 pin and 248 pin DIMMs cannot be used interchangeably. They have different physical dimensions and pin layouts, so they are not compatible with each other. Attempting to use them interchangeably can damage the DIMMs or the motherboard.
Yes, there are other differences between DDR 140 pin and 248 pin DIMMs. The 248 pin DIMMs typically have higher data transfer rates, allowing for faster performance. They also have a larger capacity for memory storage, making them suitable for more demanding applications.
The easiest way to tell if a DIMM is DDR 140 pin or 248 pin is to check the number of pins on the bottom edge of the DIMM. DDR 140 pin DIMMs will have 70 pins on each side, while DDR 248 pin DIMMs will have 124 pins on each side.
The choice between using DDR 140 pin or 248 pin DIMMs depends on the specific needs and capabilities of your system. DDR 140 pin DIMMs may be more suitable for basic computing needs, while DDR 248 pin DIMMs are better for high performance and intensive tasks. It is important to make sure that the DIMM is compatible with your motherboard before making a decision.