DDR
184 Pins 2.5 to 2.6V
DDR2
240 Pins 1.8 to 1.9V
DDR3
240 Pins 1.35 to 1.5V
DDR4
288 Pins 1.2V
What is Laptop RAM called
Small Outline DIMM (SODIMM)
What is Parity Checking
Checks if the bit is set to 1 or 0 so that the total number of bits in the byte is odd or even, and checks to ensure it is still odd or even. if its not then the bit is corrupted.
What is ECC
Error Checking and Correcting (ECC) is an enhanced form of parity chekcing that can detect internal data errors and make corrections unless it reads 2,3 or 4 (the system will generate an error message for those).