HP Dc7100 HP Compaq Business Desktop dc7100 Series Service Reference Guide, 3r - Page 281
Memory, Intel-Based Systems
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F Memory Intel-Based Systems Computers equipped with Intel-based processors come with double data rate synchronous dynamic random access memory (DDR-SDRAM) dual inline memory modules (DIMMs). The memory sockets on the system board can be populated with up to three or four industry-standard DIMMs depending on the model. These memory module slots are populated with at least one preinstalled memory module. 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. For proper system operation, if the computer supports DDR-SDRAM DIMMs, the DIMMs must be industry-standard 184-pin, unbuffered PC2700 333 MHz- or PC3200 400 MHz-compliant, 2.5 volt DDR-SDRAM DIMMs. The DDR-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 1 gBIT 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 The following processor bus frequencies are required for the system to run at the supported memory frequencies. Memory Frequency 333 MHz 400 MHz Required Processor Bus Frequency 533 MHz or 800 MHz 800 MHz If a memory frequency is paired with an unsupported processor bus frequency, the system will run at the highest supported memory speed. For example, if a 400 MHz DIMM is paired with a 533 MHz processor bus, the system will run at 400 MHz, the highest supported memory speed. ✎ The system will not start if you install unsupported DIMMs. Service Reference Guide, dC7100 361288-003 F-1