Compaq ProLiant 1000 Memory technology evolution: an overview of system memory - Page 1

Memory technology evolution: an overview of system memory technologies technology brief, 8th edition Abstract...2 Introduction...2 Basic DRAM operation ...2 DRAM storage density and power consumption 4 Memory access time...4 Chipsets and system bus timing...4 Memory bus speed...5 Burst mode access...5 SDRAM technology ...6 Bank interleaving ...7 Increased bandwidth ...7 Registered SDRAM modules ...7 DIMM Configurations ...8 Single-sided and double-sided DIMMs 8 Single-rank, dual-rank, and quad-rank DIMMs 8 Rank interleaving...9 Memory channel interleaving ...10 Advanced memory technologies ...11 Double Data Rate SDRAM technologies 11 DDR-1 ...11 DDR-2 ...13 DDR-3 ...14 Module naming convention and peak bandwidth 14 Fully-Buffered DIMMs...15 FB-DIMM architecture...16 Challenges ...17 Rambus DRAM ...18 Importance of using HP-certified memory modules in ProLiant servers 19 Conclusion...19 For more information...20 Call to action ...20