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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:
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