DIMM Densities
Currently, module providing the highest densities in the smallest module dimensions that use "mainstream" DRAM are:
4GB 1.18" SODIMMs using 1Gbit DRAM
4GB 0.72"/0.70"VLP/ULP DIMMs using 1Gbit DRAM
The following table shows how module density is related to DRAM density:
| Density | Height | DRAM | ECC/nonECC | DIMM Support |
| 512MB | 30mm (1.18") | 512Mb | x64/x72 ECC | Reg/unbuff |
| 512MB | 18mm (0.708") | 512Mb | x64/x72 ECC | Reg/unbuff |
| 512MB | 18.3mm (0.72") | 512Mb | x64/x72 ECC | Reg/unbuff |
| 1GB | 30mm (1.18") | 512Mb | x64/x72 ECC | Reg/unbuff |
| 1GB | 30mm (1.18") | 1Gb | x64/x72 ECC | Reg/unbuff |
| 1GB | 18mm (0.708") | 512Mb | x64/x72 ECC | Reg/unbuff |
| 1GB | 18mm (0.708") | 1Gb | x64/x72 ECC | Reg/unbuff |
| 1GB | 18.3mm (0.72") | 512Mb | x64/x72 ECC | Reg/unbuff |
| 1GB | 18.3mm (0.72") | 1Gb | x64/x72 ECC | Reg/unbuff |
| 2GB | 30mm (1.18") | 512Mb | x64/x72 ECC | Reg/unbuff |
| 2GB | 30mm (1.18") | 1Gb | x64/x72 ECC | Reg/unbuff |
| 2GB | 30mm (1.18") | 2Gb | x64/x72 ECC | Reg/unbuff |
| 2GB | 18mm (0.708") | 512Mb | x64/x72 ECC | Reg/unbuff |
| 2GB | 18mm (0.708") | 1Gb | x64/x72 ECC | Reg/unbuff |
| 2GB | 18mm (0.708") | 2Gb | x64/x72 ECC | Reg/unbuff |
| 2GB | 18.3mm (0.72") | 512Mb | x64/x72 ECC | Reg/unbuff |
| 2GB | 18.3mm (0.72") | 1Gb | x64/x72 ECC | Reg/unbuff |
| 2GB | 18.3mm (0.72") | 2Gb | x64/x72 ECC | Reg/unbuff |
| 4GB | 30mm (1.18") | 512Mb | x64/x72 ECC | Registered |
| 4GB | 30mm (1.18") | 1Gb | x64/x72 ECC | Registered |
| 4GB | 30mm (1.18") | 2Gb | x64/x72 ECC | Registered |
| 4GB | 18mm (0.708") | 512Mb | x64/x72 ECC | Registered |
| 4GB | 18mm (0.708") | 1Gb | x64/x72 ECC | Registered |
| 4GB | 18mm (0.708") | 2Gb | x64/x72 ECC | Registered |
| 4GB | 18.3mm (0.72") | 512Mb | x64/x72 ECC | Registered |
| 4GB | 18.3mm (0.72") | 1Gb | x64/x72 ECC | Registered |
| 4GB | 18.3mm (0.72") | 2Gb | x64/x72 ECC | Registered |
| 8GB | 30mm (1.18") | 1Gb | x64/x72 ECC | Registered |
| 8GB | 30mm (1.18") | 2Gb | x64/x72 ECC | Registered |
| 16GB | 30mm (1.18") | 2Gb | x64/x72 ECC | Registered |
RAMpedia is a DRAM memory encyclopedia and reference tool
to help computer hardware board designers with DRAM memory subsystems.
This information is provided as a courtesy by Virtium Technology.
www.virtium.com
