HP dx6120 Hardware Reference Guide - HP Compaq Business Desktops dx6120 Microt - Page 14

Hardware Upgrades Installing Additional Memory The computer comes with double data rate 2 synchronous dynamic random access memory (DDR2-SDRAM) dual inline memory modules (DIMMs). DIMMs The memory sockets on the system board can be populated with up to four industry-standard DIMMs. These memory sockets are populated with at least one preinstalled DIMM. To achieve the maximum memory support, you can populate the system board with up to 4GB of memory configured in a high-performing dual channel mode. DDR2-SDRAM DIMMs For proper system operation, if the computer supports DDR2-SDRAM DIMMs, the DIMMs must be: ■ industry-standard 240-pin ■ unbuffered PC3200 400 MHz-compliant or PC4300 533 MHz-compliant ■ 1.8 volt DDR2-SDRAM DIMMs The DDR2-SDRAM DIMMs must also: ■ support CAS latency 2.5 or 3 (CL = 2.5 or CL = 3) ■ contain the mandatory JEDEC SPD information In addition, the computer supports: ■ 256Mbit, 512Mbit, and 1Gbit non-ECC memory technologies ■ single-sided and double-sided DIMMS ■ DIMMs constructed with x8 and x16 DDR devices; DIMMs constructed with x4 SDRAM are not supported 2-4 www.hp.com Hardware Reference Guide