Question: how many pins are in a ddr3 so-dimm?
Answer: 204-pin SO-DIMMs (DDR3 SDRAM) have a single notch closer to the center than on 200-pin SO-DIMMs. 260-pin SO-DIMMs (DDR4 SDRAM), 69.6 mm (2.74 inches) wide and 30 mm (1.2 inches) high, making them 2 mm (0.079 inches) wider than DDR3 SO-DIMMs, with a single notch after pin 144.