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Intel® Desktop Board D820LP
System Memory

End of Interactive Support
Intel is announcing the end of interactive support for the Intel® Desktop Board D820LP. See the End of Interactive Support Announcement for details.



Contents

Important Notes

System Memory Combinations

The desktop board uses Rambus* RDRAM RIMM* technology.

The desktop board supports the following memory features:

  • Up to two 2.5 V, 168-pin RIMM modules
  • Single- or double-sided RIMM module configurations
  • Serial Presence Detect (SPD) memory only
  • Non-ECC with 16-bit components (128 Mbit technology)
  • ECC with 18-bit components (144 Mbit technology)
  • 512 MB maximum onboard capacity using 128/144 Mbit technology
Caution: The board supports combinations of no more than 32 RDRAM components across all installed RIMM modules. If the total number of RDRAM components installed in RIMM connectors exceeds 32, the computer will not boot.

All RIMM connectors must be populated to achieve continuity for termination at the Rambus interface. Continuity RIMMs ( or "pass-through" modules) must be installed in any unused RIMM connectors.

The following table gives examples of RDRAM component-count for supported RIMM modules. Component counts can be identified on the RIMM label.

Typical RIMM Module Configurations
Rambus Technology 128/144 Mbit
4 RDRAM components per RIMM 64 MB
6 RDRAM components per RIMM 96 MB
8 RDRAM components per RIMM 128 MB
12 RDRAM components per RIMM 192 MB
16 RDRAM components per RIMM 256 MB

Note. To obtain the best memory bus loading characteristics, RIMM modules should be installed in Bank 0 first and then in Bank 1 (bank 0 is closest to the processor). A continuity RIMM module must be installed in Bank 1 if unused.

The BIOS automatically selects the memory bus frequency from the Serial Presence Detect (SPD) information in the RIMM module. The Intel® Desktop Board D820LP platform supports only Serial Presence Detect (SPD) memory. Serial Presence Detect (SPD) information is required to properly configure the Rambus interface. The BIOS configures the Rambus interface to the speed of the slowest RIMM module installed.

The following table describes the memory frequencies supported with standard configurations of the Intel Desktop Board D820LP.

Memory Bus Frequency with DRCG (Rambus Clock Generator)
  PC600 PC700 PC800
Host Bus 100 MHz 300 MHz See footnote* 400 MHz
Host Bus 133 MHz 266 MHz 356 MHz 400 MHz
* The BIOS configures the Rambus interface to a memory bus frequency of 300 MHz for PC700 memory when configured with a host bus speed of 100 MHz. This is equivalent to PC600 performance.

ECC memory detects multiple-bit errors and corrects single-bit errors. When ECC memory is installed, the BIOS will support both ECC and non-ECC mode. The BIOS automatically detects if ECC memory is installed and provides the Setup option for selecting ECC mode. ECC mode must be enabled in the Setup program; the default setting is disabled. If any non-ECC memory is installed, ECC operation is not available.

The following table describes the effect of using Setup to put each memory type in each supported mode.

Memory Error Detection Mode Established in Setup Program

Memory Type ECC Disabled ECC Enabled
Non-ECC RIMM No error detection N/A
ECC RIMM No error detection Single-bit error correction, multiple-bit error detection

Note: Whenever ECC mode is selected in Setup, some performance loss may occur.

RIMM Vendors - Web Sites

The list below contains vendors that have tested their memory for Intel Desktop Board D820LP, and that have their products listed on their own Web site. Please visit their sites to obtain information on their products.

There are no memory vendor links at this time.

RIMM Vendors - Tested Part Numbers

The table below lists parts which passed either BASIC or FULL testing conducted by Intel for the Intel Desktop Board D820LP. Parts tested by third-party RIMM vendors can be found under the list of "RIMM Vendors - Web Sites" section above. For a complete explanation of FULL and BASIC testing see the Desktop Board Component Functional Testing Levels page.

PC600 RIMMs

Manufacturer Size (MB) Test Level Manufacturer Part Number Number of Devices ECC or non-ECC
Infineon 128 MB FULL HYR186420G-653 8 ECC
NEC 64 MB FULL MC-4R64CEE6C-653 4 Non-ECC
NEC 128 MB FULL MC-4R128CEE6C-653 8 Non-ECC
NEC 256 MB FULL MC-4R256CEE6C-845 16 Non-ECC
Samsung 64 MB FULL KMMR18R84AC1-RG6* 4 ECC
Samsung 64 MB FULL MR18R0824AG1-CG600 4 ECC
Samsung 96 MB FULL KMMR18R86AC1-RG6* 6 ECC
Samsung 96 MB FULL MR18R0826AG1-CG600 6 ECC
Samsung 128 MB FULL KMMR18R88AC1-RG6* 8 ECC
Samsung 128 MB FULL MR18R0828AG1-CG600 8 ECC
Samsung 192 MB FULL KMMR18R8CAC1-RG6* 12 ECC
Samsung 192 MB FULL MR18R082CAG1-CG600 12 ECC
Samsung 256 MB FULL KMMR18R8GAC1-RG6* 16 ECC
Samsung 256 MB FULL MR18R082GAG1-CG600 16 ECC
Samsung 64 MB FULL KMMR16R84AC1-RG6* 4 Non-ECC
Samsung 96 MB FULL KMMR16R86AC1-RG6* 6 Non-ECC
Samsung 128 MB FULL KMMR16R88AC1-RG6* 8 Non-ECC
Samsung 192 MB FULL KMMR16R8CAC1-RG6* 12 Non-ECC
Samsung 256 MB FULL KMMR16R8GAC1-RG6* 16 Non-ECC

PC700 RIMMs
Manufacturer Size (MB) Test Level Manufacturer Part Number Number of Devices ECC or non-ECC
Infineon 128 MB FULL HYR186420G-745 8 ECC
Kingston 64 MB BASIC KVR700x18-4/64 4 ECC
NEC 64 MB FULL MC-4R64CEE6C-745 4 Non-ECC
NEC 128 MB FULL MC-4R128CEE6C-745 8 Non-ECC
NEC 256 MB FULL MC-4R256CEE6C-745 16 Non-ECC
Samsung 64 MB FULL KMMR18R84AC1-RK7* 4 ECC
Samsung 96 MB FULL KMMR18R86AC1-RK7* 4 ECC
Samsung 128 MB FULL KMMR18R88AC1-RK7* 4 ECC
Samsung 64 MB FULL KMMR16R84AC1-RK7* 4 Non-ECC
Samsung 64 MB FULL MR16R0824AG1-CK700 4 Non-ECC
Samsung 96 MB FULL KMMR16R86AC1-RK7* 6 Non-ECC
Samsung 96 MB FULL MR16R0826AG1-CK700 6 Non-ECC
Samsung 128 MB FULL KMMR16R88AC1-RK7* 8 Non-ECC
Samsung 128 MB FULL MR16R0828AG1-CK700 8 Non-ECC
Samsung 192 MB FULL KMMR16R8CAC1-RK7* 12 Non-ECC
Samsung 192 MB FULL MR16R082CAG1-CK700 12 Non-ECC
Samsung 256 MB FULL KMMR16R8GAC1-RK7* 16 Non-ECC
Samsung 256 MB FULL MR16R082GAG1-CK700 16 Non-ECC
Samsung 192 MB FULL KMMR18R8CAC1-RK7* 12 ECC
Samsung 192 MB FULL MR18R082CAG1-CK700 12 ECC
Samsung 256 MB FULL KMMR18R8GAC1-RK7* 16 ECC
Samsung 256 MB FULL MR18R082GAG1-CK700 16 ECC
Smart Modular 64 MB BASIC SMH072RFSAH01 4 ECC
Smart Modular 96 MB BASIC SMH108RFSAH01 6 ECC
Smart Modular 128 MB BASIC SMH144RFSAH01 8 ECC

PC800 RIMMs
Manufacturer Size (MB) Test Level Manufacturer Part Number Number of Devices ECC or non-ECC
Infineon 128 MB FULL HYR186420G-845 8 ECC
Kingston 64 MB BASIC KVR800x18-4/64 4 ECC
Kingston 128 MB BASIC KVR800x18-8/128 8 ECC
Kingston 256 MB BASIC KVR800X18-16/256 16 ECC
NEC 64 MB FULL MC-4R64CEE6C-845 4 Non-ECC
NEC 128 MB FULL MC-4R128CEE6C-845 8 Non-ECC
NEC 256 MB FULL MC-4R256CEE6C-845 16 Non-ECC
Samsung 64 MB FULL KMMR18R84AC1-RK8* 4 ECC
Samsung 64 MB FULL MR18R0824AG1-CK800 4 ECC
Samsung 64 MB FULL KMMR16R84AC1-RK8* 4 Non-ECC
Samsung 96 MB FULL KMMR18R86AC1-RK8* 6 ECC
Samsung 96 MB FULL MR18R0826AG1-CK800 6 ECC
Samsung 96 MB FULL KMMR16R86AC1-RK8* 6 Non-ECC
Samsung 128 MB FULL KMMR18R88AC1-RK8* 8 ECC
Samsung 128 MB FULL MR18R0828AG1-CK800 8 ECC
Samsung 128 MB FULL MR16R0828AG1-CK800 8 Non-ECC
Samsung 128 MB FULL KMMR16R88AC1-RK8* 8 Non-ECC
Samsung 192 MB FULL KMMR18R8CAC1-RK8* 12 ECC
Samsung 192 MB FULL MR18R082CAG1-CK800 12 ECC
Samsung 192 MB FULL KMMR16R8CAC1-RK8* 12 Non-ECC
Samsung 192 MB FULL MR16R082CAG1-CK800 12 Non-ECC
Samsung 256 MB FULL KMMR18R8GAC1-RK8* 16 ECC
Samsung 256 MB FULL MR18R082GAG1-CK800 16 ECC
Samsung 256 MB FULL KMMR16R8GAC1-RK8* 16 Non-ECC
Smart Modular 64 MB BASIC SMH072RFS0D02 4 ECC
Smart Modular 128 MB BASIC SMH144RFS0D01 8 ECC

* These Samsung part numbers are obsolete.

This applies to:
Intel® Desktop Board D820LP



Solution ID: CS-013192
Date Created: 12-Jul-2004
Last Modified: 31-Oct-2006
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