DRAM densitySize of the chip are measured in megabits (1 megabyte = 8 megabits. For example, 256 Mbit
means 32 MB
.) Nearly all motherboards only recognize 1 GB modules if they contain 64M×8
chips (low density ).
If 128M×4 (high density)
1 GB modules are used, they most likely will not work. The JEDEC
standard allows 128M×4
only for slower buffered/registered modules designed specifically for some servers, but some generic manufacturers do not comply.