| A | B |
| parity | extra bit for error detection |
| non-parity | no error detection |
| ECC | self corrects errors |
| non-ECC | does not self correct errors |
| SDRAM | a type of DRAM |
| DDR | double the speed of SDRAM |
| DDR2 | second generation DDR |
| DDR3 | third generation DDR |
| registered | contributes to stability of RAM |
| buffered | an informal term for registered |
| SIMM | single in-line memory module |
| DIMM | dual in-line memory module |
| Gigabyte | one billion bytes |
| Megabyte | one million bytes |
| Kilobyte | one thousand bytes |
| SRAM | static RAM |
| DRAM | dynamic RAM |