System Memory for the Intel® Desktop Board D946GZIS
Updated: December 3, 2007
System memory features
The board has two DIMM sockets and supports the following memory features:
- 1.8 V (only) DDR2 SDRAM DIMMs with gold-plated contacts
- Unbuffered, single-sided or double-sided DIMMs with the following restriction: Double-sided DIMMs with x16 organization are not supported
- 4 GB maximum total system memory
- Minimum total system memory: 128 MB
- Non-ECC DIMMs
- Serial Presence Detect
- DDR2 667 or DDR2 533 MHz SDRAM DIMMs
| Note | To be fully compliant with all applicable DDR SDRAM memory specifications, the board should be populated with DIMMs that support the Serial Presence Detect (SPD) data structure. This enables the BIOS to read the SPD data and program the chipset to accurately configure memory settings for optimum performance. If non-SPD memory is installed, the BIOS will attempt to correctly configure the memory settings, but performance and reliability may be impacted or the DIMMs may not function under the determined frequency. |
Supported DIMM configurations
The following table lists the supported DIMM configurations.
| DIMM Type | SDRAM Technology | Smallest usable DIMM (one x16 Single-sided DIMM) | Largest usable DIMM (one x8 Double-sided DIMM) | Maximum capacity with four identical x8 Double-sided DIMMs |
| DDR2 533 | 256 Mbit | 128 MB | 512 MB | 1 GB |
| DDR2 533 | 512 Mbit | 256 MB | 1 GB | 2 GB |
| DDR2 533 | 1 Gbit | 512 MB | 2 GB | 4 GB |
| DDR2 667 | 256 Mbit | 128 MB | 512 MB | 1 GB |
| DDR2 667 | 512 Mbit | 256 MB | 1 GB | 2 GB |
| DDR2 667 | 1 Gbit | 512 MB | 2 GB | 4 GB |
| Note | Regardless of the DIMM type used, the memory frequency will either be equal to or less than the processor system bus frequency. For example, if DDR2 667 memory is used with a 533 MHz system bus frequency processor, the memory will operate at 533 MHz. The table below lists the resulting operating memory frequencies based on the combination of DIMMs and processors. |
| DIMM Type | Processor system bus frequency | Resulting memory frequency |
| DDR2 533 | 533 MHz | 533 MHz |
| DDR2 533 | 800 MHz | 533 MHz |
| DDR2 533 | 1066 MHz | 533 MHz |
| DDR2 667 | 533 MHz | 533 MHz |
| DDR2 667 | 800 MHz | 667 MHz |
| DDR2 667 | 1066 MHz | 667 MHz |
3rd party tested memory occurs as requested by the memory vendors and is tested at an independent memory house that is not a part of Intel - Computer Memory Test Labs (CMTL).
Vendor self tested memory
Intel supplies the memory vendors that participate in this program with a common memory test plan to use as a basic checkout of the memory stability. Memory listed here was either tested by the memory vendor or by Intel using this test plan. These part numbers may not be readily available throughout the product life cycle.
The table below lists parts which passed testing conducted using Intel's Self Test program for Intel® Desktop Board D946GZIS.
| Module Supplier Module Part Number | Module Size (MB) | Module Speed (MHz) | Latency CL-tRCD-tRP | ECC or Non-ECC? | DIMM Organization | Module Date Code | Component Used Comp Part Number |
| Crucial* CT12864AA667.16FB | 1 GB | 667 | 5-5-5 | Non-ECC | DSx8 | 0602 | Micron* MT47H64M8CB-3:B |
| Crucial CT6464AA667.8FB | 512 MB | 667 | 5-5-5 | Non-ECC | SSx8 | 0543 | Micron MT47H64M8CB-3:B |
| Crucial CT12864AA53E.8FE | 1 GB | 533 | 4-4-4 | Non-ECC | SSx8 | 0649 | Micron MT47H128M8HQ |
| Crucial CT3264AA667.4FB | 256 MB | 667 | 5-5-5 | Non-ECC | SSx16 | 0527 | Micron MT47H32M16CC-3:B |
| Crucial CT25664AA53E.16FE | 2 GB | 533 | 4-4-4 | Non-ECC | DSx8 | 0651 | Micron MT47H128M8HQ |
| Crucial CT3264AA80E.4FD | 1 GB | 667 | 5-5-5 | Non-ECC | SSx8 | 0651 | Micron MT47H128M8HQ |
| Crucial CT6464AA53E.4FE | 512 MB | 533 | 4-4-4 | Non-ECC | SSx16 | 0648 | Micron MT47H64M16HR-37E |
| Micron* MT16HTF12864AY-667D4 | 1 GB | 667 | 5-5-5 | Non-ECC | DSx8 | 0650 | Micron MT47H64M8B6 |
| Micron MT4HTF6464AY-53EE1 | 512 MB | 533 | 4-4-4 | Non-ECC | SSx16 | 0648 | Micron MT47H64M16HR-37E |
| Micron MT8HTF12864AY-667E1 | 1 GB | 667 | 5-5-5 | Non-ECC | SSx8 | 0651 | Micron MT47H128M8HQ |
| Micron MT16HTF12864AY-667B3 | 1 GB | 667 | 5-5-5 | Non-ECC | DSx8 | 0602 | Micron MT47H64M8CB-3:B |
| Micron MT8HTF12864AY-53EE1 | 1 GB | 533 | 4-4-4 | Non-ECC | SSx8 | 0649 | Micron MT47H128M8HQ |
| Micron MT16HTF12864AY-667A3 | 1 GB | 667 | 5-5-5 | Non-ECC | SSx8 | 0508 | Micron MT47H64M8BT-3:A |
| Micron MT8HTF6464AY-667B3 | 512 MB | 667 | 5-5-5 | Non-ECC | SSx8 | 0542 | Micron MT47H64M8CB-3:B |
| Micron MT4HTF3264AY-667B1 | 256 MB | 667 | 5-5-5 | Non-ECC | SSx16 | 0527 | Micron MT47H32M16CC-3:B |
| Micron MT16HTF25664AY-53EE1 | 2 GB | 533 | 4-4-4 | Non-ECC | DSx8 | 0651 | Micron MT47H128M8HQ |
| Samsung* M378T2953CZ3-CE6 | 1 GB | 667 | 5-5-5 | Non-ECC | DSx8 | 0518 | Samsung K4T51083QC-ZCE6 |
| Samsung M378T6553CZ3-CE6 | 512 MB | 667 | 5-5-5 | Non-ECC | SSx8 | 0525 | Samsung K4T51083QC-ZCE6 |
| Samsung M378T3354CZ3-CE6 | 256 MB | 667 | 5-5-5 | Non-ECC | SSx16 | 0522 | Samsung K4T51163QC-ZCE6 |
