Filter
Top Products
Hardware Reference Guide 1–7
Hardware Upgrades
Installing Additional Memory
The computer comes with Double Data Rate-Synchronous Dynamic
Random Access Memory (DDR-SDRAM) Dual Inline Memory
Modules (DIMMs).
DIMMs
The memory sockets on the system board can be populated with
industry-standard DIMMs. These memory module slots are populated
with at least one preinstalled memory module. To achieve the
maximum memory support, you may be required to replace the
preinstalled DIMM with a higher capacity DIMM.
The HP Compaq d228 and d230 Microtower system boards can be
populated with up to 2GB of memory and support single-channel
mode. The HP Compaq d248 Microtower system board can be
populated with up to 4GB of memory and supports single-channel or
dual-channel mode.
✎
For more information about single-channel or dual-channel memory
modes, see the section “Single Channel and Dual Channel Modes” on
page 8.
DDR-SDRAM DIMMs
For proper system operation, if the computer supports DDR-SDRAM
DIMMs, the DIMMs must be:
■ industry-standard 184-pin
■ unbuffered PC2100 266 MHz-, PC2700 333 MHz-, or PC3200
400 MHz-compliant
✎
Only the HP Compaq d248 Microtower supports PC3200 400
MHz-compliant DIMMS.
■ 2.5 volt DDR-SDRAM DIMMs.
The DDR-SDRAM DIMMs must also:
■ support CAS latency 2, 2.5, or 3 (CL = 2, CL = 2.5, or CL = 3)