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HP d325 MT Introduction Manual

Configuring graphics memory
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Download this manual See also: Troubleshooting Manual
Configuring Graphics Memory
for HP Business Desktop d325 Microtower
Abstract.............................................................................................................................................. 2
Introduction......................................................................................................................................... 2
Graphics Memory Allocation ................................................................................................................ 3
Graphics Driver................................................................................................................................... 3
Main Memory Configuration................................................................................................................. 4
Memory Speed.................................................................................................................................... 4
Summary ............................................................................................................................................ 5
Appendix ........................................................................................................................................... 6
Example 1....................................................................................................................................... 6
Example 2....................................................................................................................................... 7
Example 3....................................................................................................................................... 8

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Summary of Contents for HP d325 MT

  • Page 1: Table Of Contents

    Configuring Graphics Memory for HP Business Desktop d325 Microtower Abstract... 2 Introduction... 2 Graphics Memory Allocation ... 3 Graphics Driver... 3 Main Memory Configuration... 4 Memory Speed... 4 Summary ... 5 Appendix ... 6 Example 1... 6 Example 2... 7...

  • Page 2: Abstract

    The d325 business desktop supports single-channel and dual-channel main memory configurations. Performance tests carried out by HP indicate that a dual-channel memory configuration can lead to significant performance gains. This white paper outlines main memory configuration issues and the performance testing, and offers recommendations for optimizing the memory configuration.

  • Page 3: Graphics Memory Allocation

    HP recommends using the Auto feature. Graphics Driver Not only is graphics memory size important, so is location. With the HP graphics driver installed, graphics memory is allocated at the top of main memory space. If any other driver is used, graphics memory may be allocated elsewhere, potentially impacting the performance of the entire system.

  • Page 4: Main Memory Configuration

    Channels Single (one DIMM deployed), dual (two DIMMs deployed) As shown in Table 2, the system board of the d325 business desktop includes two DIMM slots, each delivering an independent, 64-bit-wide memory channel. Configuring these channels appropriately can impact graphics performance.

  • Page 5: Summary

    64 MB of DDR main memory. The d325 business desktop supports single-channel and dual-channel configurations. Performance tests carried out by HP indicate that a dual-channel memory configuration can achieve significant performance gains. Some care is required when configuring memory; mismatched DIMMs or the use of an alternative graphics driver can degrade graphics or system performance.

  • Page 6: Appendix

    • An alternative graphics driver is used Note In this context, a graphics driver supplied with the system or downloaded from the HP website is an HP driver; any other graphics driver is an alternative driver. Example 1 In this example (shown in Figure 1), the end-user is deploying matched DIMMs. The graphics driver can be HP-or an alternative.

  • Page 7: Example 2

    Example 2 In this example (shown in Figure 2), the end-user is deploying mismatched DIMMs. There is an HP graphics driver. Figure 2: Dual-channel memory with mismatched DIMMS, HP graphics driver. The BIOS maps upper memory to be 64 bits wide, lower memory to be 128 bits wide.

  • Page 8: Example 3

    In this example (shown in Figure 3), the end-user is deploying mismatched DIMMs. There is an alternative graphics driver. Note An alternative graphics driver may behave differently than an HP driver if memory is mismatched, as in this example. Figure 3: Dual-channel memory with mismatched DIMMS, alternative graphics driver.
  • Page 9 HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

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