User Guide

User Guide
Memory: Dell™ XPS One™ Service Manual

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Memory

Dell™ XPS One™ Service Manual

The <%= strMarketingName %> system uses dual-channel DDR2 SDRAM, which offers a performance advantage over DDR1 memory technology. It supports industry standard 64-bit–wide DIMMs with synchronous SDRAM. The features supported are listed below.
  • Support for 800 MHz and 667 MHz operation
  • Single-channel or dual-channel memory operation, with performance depending on configuration
    • Dual-channel symmetric mode, in which both channels are populated with the same size memory. This configuration yields peak memory performance as both channels are used simultaneously.
    • Dual-channel asymmetric mode, in which both channels are populated but with different memory amounts. This configuration yields the performance of a single channel of memory with the combined memory size of the two channels.
    • Single-channel mode, in which only one channel is populated.
  • Up to 6.40 GB/s of theoretical memory bandwidth for 800 MHz memory in single-channel mode and up to 12.8 GB/s in dual-channel mode
  • Up to 5.3 GB/s of theoretical memory bandwidth for 667 MHz memory in single-channel mode and up to 10.7 GB/s in dual-channel mode
  • Enhanced power management features (including Suspend-to-RAM)
  • Support for 128 MB, 256 MB, 512 MB, 1 GB, and 2 GB DDR2 SDRAM technologies
  • Support for unbuffered non-ECC DIMMs only
  • Support for x4, x8, and x16 DDR2 devices with four or eight banks
  • Serial Presence Detect (SPD) scheme for DIMM detection
  • 240-pin DDR2 DIMM connector as specified in JEDEC DDR2 DIMM spec
  • Support for selective command-per-clock accesses

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