Contents

• Definitions of Testing Levels
• Important Notes
• System Memory Combinations
• DIMM Vendors
  
  Important Notes
• About Testing Levels

System Memory Combinations

The motherboard has three, dual inline memory module (DIMM) sockets. Minimum memory size is 16 MB; maximum memory size is 768 MB. The BIOS automatically detects memory type, size, and speed.

The motherboard supports the following memory features:

• 168-pin DIMMs with gold-plated contacts
• 66 or 100 MHz (matching Host Bus speed) unbuffered SDRAM only
• Non-ECC (64-bit) and ECC (72-bit) memory
• 3.3 V memory only
• Single- or double-sided DIMMs in the following sizes:

Memory can be installed in one, two, or three sockets. Memory size can vary between sockets.

Note: BIOS revision P14 or later is required to support 256 MB DIMMs. The 256 MB DIMMs used with this board must be built with 128 Mbit device technology.


DIMM Vendors - Web Sites

The list below contains vendors that have tested their memory for Intel® JN440BX motherboards, and that have their products listed on their own website. Please visit their sites to obtain information on their products.

• Admor Memory ^†
• Advantage Memory Corp. ^†
• All Components ^†
• C-Memory ^†
• Camintonn Corporation ^†
• Centon Electronics ^†
• DataRAM ^†
• GoldenRAM ^†
• Kingston Technology Company ^†
• Peripheral Enhancements Corporation ^†
• PNY Technologies ^†
• Southland Micro Systems ^†
• Super PC Memory ^†
• TechWorks ^†
• Viking Components ^†

DIMM Vendors - SDRAM Non-ECC DIMMs
Synchronous DRAM (SDRAM) improves memory performance through memory access that is synchronous with the memory clock. This simplifies the timing design and increases memory speed because all timing is dependent on the number of memory clock cycles.

NOTE:All memory components and DIMMs used with the JN440BX motherboard must comply with the PC SDRAM Specifications. These include: the PC SDRAM Specification (memory component specific), the PC unbuffered SDRAM Specifications, and the PC Serial Presence Detect Specification.

Customers can access these documents through the PC SDRAM Specifications website. See the technical product specification for more information about these specifications.

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 #	Comments
1M x 64 (8 MB)	Unbuffered SDRAM	Non-ECC - 100 MHz
None at this time
1M x 64 (8 MB)	Unbuffered SDRAM	Non-ECC - 66 MHz
None at this time
2M x 64 (16 MB)	Unbuffered SDRAM	Non-ECC - 100 MHz
Micron	Full	MT8LSDT264AG-10AC4
Micron	Full	MT8LSDT264AG-10BC4
Samsun	Full	KMM366S203CT-GL*
2M x 64 (16 MB)	Unbuffered SDRAM	Non-ECC - 66 MHz
None at this time.
4M x 64 (32 MB)	Unbuffered SDRAM	Non-ECC - 100 MHz
Micron	Full	MT5LSDT472AG-10EC5
Micron	Full	MT4LSDT464AG-10EC5
Micron	Full	MT4LSDT464AG-10EC6
Micron	Full	MT16LSDT464AG-10AC4
Micron	Full	MT16LSDT464AG-10BC4
Samsung	Full	M366S0403CT0-C1L00
Samsung	Full	M366S0424BT0-C1L00
Samsung	Full	KMM366S403CT-GL*
Samsung	Full	KMM366S424BT-GL*
4M x 64 (32 MB)	Unbuffered SDRAM	Non-ECC - 66 MHz
None at this time.
8M x 64 (64 MB)	Unbuffered SDRAM	Non-ECC - 100 MHz
Micron	Full	MT9LSDT872AG-10EC7
Micron	Full	MT8LSDT846AG-10EC7
Samsung	Full	KMM366S823BT-GL*
Samsung	Full	KMM366S823CTS-GL*
8M x 64 (64 MB)	Unbuffered SDRAM	Non-ECC - 66 MHz
None at this time.
16M x 64 (128 MB)	Unbuffered SDRAM	Non-ECC - 100 MHz
Micron	Full	MT16LSD1664AG-10CD4
Micron	Full	MT18LSDT1672AG-10EC7
Samsung	Full	KMM366S1724T-GL*
Samsung	Full	M366S1724MT0-C1L00
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 non-ECC memory is installed, the Setup option for ECC mode does not appear.

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.

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 #	Comments
2M x 72 (16 MB)	Unbuffered SDRAM	ECC - 100 MHz
Micron	Full	MT9LSDT272AG-10AC4
Samsung	Full	MT9LSDT272AG-10BC4
Samsung	Full	KMM374S203CT-GL*
2M x 72 (16 MB)	Unbuffered SDRAM	ECC - 66 MHz
None at this time.
4M x 72 (32 MB)	Unbuffered SDRAM	ECC - 100 MHz
Micron	Full	MT18LSDT472AG-10BC4
Samsung	Full	KMM374S403CT-GL*
Samsung	Full	KMM374S3323BT-GL*
Samsung	Full	M374S0403CT0-C1L00
Samsung	Full	M374S3323BT0-C1L00
4M x 72 (32 MB)	Unbuffered SDRAM	ECC - 66 MHz
None at this time
8M x 72 (64 MB)	Unbuffered SDRAM	ECC - 100 MHz
Micron	Full	MT9LSDT872AG-10BD2
NEC	Full	MC-458CA726F-A10
NEC	Full	MC-458CA726F-A80
Samsung	Full	KMM374S823BT-GL*
Samsung	Full	KMM374S823CTS-GL*
Samsung	Full	M374S0823BT0-C1L00
8M x 72 (64 MB)	Unbuffered SDRAM	ECC - 66 MHz
None at this time.
16M x 72 (128 MB)	Unbuffered SDRAM	ECC - 100 MHz
Micron	Full	MT9LST1672AG-10EB1
Samsung	Full	KMM374S1623BT-GL*
Samsung	Full	KMM374S1623DT-GL*
Samsung	Full	M374S1623CT0-C1L00
16M x 72 (128 MB)	Unbuffered SDRAM	ECC - 66 MHz
None at this time.

* These Samsung part numbers are obsolete.

This applies to:

Intel® JN440BX Motherboard