System Memory Combinations
The motherboard has two DIMM sockets. SDRAM can be installed in one or both sockets. In addition, the motherboard supports both serial presence detect (SPD) and non-SPD data structures. Using the SPD data structure programmed into an E2PROM on the DIMM, the BIOS can determine the SDRAM's size and speed. When using the non-SPD data structure, the BIOS must dynamically determine SDRAM size.
Minimum memory size is 8 MB; maximum memory size is 256 MB. Memory size can vary between sockets.
The motherboard supports the following memory features:
- 168-pin DIMMs with gold-plated contacts
- 66 MHz, 4 Clock SDRAM
- Non-error checking and correcting (ECC) (64-bit) memory
- Unbuffered single- or double-sided DIMMs in the following sizes:
| Non-ECC | Configuration |
| 8M | 1M x 64 |
| 16 MB | 2M x 64 |
| 32 MB | 4M x 64 |
| 64 MB | 8M x 64 |
| 128 MB | 16M x 64 |
Note: The motherboard supports DIMMs with an ECC configuration; however, ECC features cannot be enabled.
Note: All memory components and DIMMs used with the Intel® MU440EX motherboard must comply with the PC SDRAM specifications. These include the PC SDRAM Specification (memory component specific) and the PC Unbuffered DIMM Specification. When using a DIMM with the SPD data structure, the DIMM must comply with the PC Serial Presence Detect Specification. See the Technical Product Specification for information about these specifications.
DIMM Vendors - Web Sites
The list below contains vendors that have tested their memory for Intel® MU440EX Motherboards and have their products listed on their own website. Please visit their sites to obtain information on their products.
DIMM Vendors - SDRAM Non-ECC DIMMs
The following tables list DIMMs that have been tested. DIMMs not listed should also function properly as long as their specifications are compatible with the devices listed below. In general, DIMM devices that are faster than those specified for a given platform will work, although no extra performance will be realized.
| Vendor* | Test | Vendor Part Number |
| 1M x 64 (8 MB), Unbuffered SDRAM, Non-ECC - 66 MHz |
| None at this time. | | |
| 2M x 64 (16 MB), Unbuffered SDRAM, Non-ECC - 66 MHz |
| None at this time. | | |
| 4M x 64 (32 MB), Unbuffered SDRAM, Non-ECC - 66 MHz |
| Micron | Full | MT4LSDT464AG-662B2 |
| NEC | Full | MT4LSDT464AG-662D1 |
| Samsung | Full
| MC-454AD644F-A67 |
| 8M x 64 (64 MB), Unbuffered SDRAM, Non-ECC - 66 MHz |
| Micron | Full | MT8LSDT864AG-662D3 |
| NEC | Full | MC458CB645FAA10 |
| Samsung | Full | KMM366S823BTL-G0 |
| 16M x 64 (128 MB), Unbuffered SDRAM, Non-ECC - 66 MHz |
| None at this time. | | |
DIMM Vendors - SDRAM ECC DIMMs
Error checking and correcting ECC memory detects multiple-bit errors and corrects single-bit errors. When ECC memory is installed, the BIOS supports both ECC and non-ECC mode. ECC mode is enabled in the Setup program. The BIOS automatically detects if ECC memory is installed and provides the Setup option for selecting ECC mode. If any non-ECC memory is installed, the Setup option for ECC configuration does not appear and ECC operation is not available. The following table describes the effect of using Setup to put each memory type in each supported mode. Whenever ECC mode is selected in Setup, some performance loss occurs.
| Memory Error Detection Mode Established in Setup Program |
| | EC Disabled | ECC Enabled |
| Non-ECC DIMM | No error detection | N/A |
| ECC DIMM | No error detection | Single-bit error correction,
multiple-bit error detection |
The following tables list DIMMs that have been tested. DIMMs that are not listed should also function properly as long as their specifications are compatible with the devices listed below. In general, DIMM devices that are faster than those specified for a given platform will work, although no extra performance will be realized.
| Vendor* | Test | Vendor Part Number |
| 2M x 72 (16 MB), Unbuffered SDRAM, ECC - 66MHz |
| None at this time. | | |
| 4M x 72 (32 MB), Unbuffered SDRAM, ECC - 66MHz |
| Micron | Full | MT5LSDT472AG-662B1 |
| 8Mbit x 72 (64 MB), Unbuffered SDRAM, ECC - 66MHz |
| Micron | Full | MT9LSDTAG-662D3 |
| 4M x 72 (82 MB), Unbuffered SDRAM, ECC - 66MHz |
| None at this time. | | |
| 16Mbit x 72 (128 MB), Unbuffered SDRAM, ECC - 66MHz |
| None at this time. | | |
