Intel D850EMV2 Product Specification - Page 23

System Memory - ram

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Product Description 1.7 System Memory CAUTION Turn off the power and unplug the power cord before installing or removing RIMM modules. Failure to do so could damage the memory and the board. (After AC power is removed, the standby power indicator LED should not be lit. See Figure 11 on page 45 for the location of the standby power indicator LED.) ✏ NOTE The desktop boards D850EMD2/D850EMV2 support combinations of no more than 32 RDRAM components per RDRAM bank. If the total number of RDRAM components installed in all RIMM sockets exceeds 64, the computer will not boot. 1.7.1 Memory Features The 82850E MCH integrates two lock-stepped Direct Rambus banks, providing a processor-tomemory bandwidth up to 3.2 GB/sec. The desktop boards D850EMD2/D850EMV2 have four RIMM sockets (two sockets for each bank) and support the following memory features: • Single- or double-sided RIMM configurations • Maximum of 32 Direct Rambus devices per bank • Memory configurations from 128 MB (minimum) to 2 GB (maximum), using 128 Mbit or 256 Mbit technology PC800-compliant RDRAM • Serial Presence Detect (SPD)-based configuration for optimal memory operation • Suspend to RAM support • ECC and non-ECC support 1.7.2 Continuity RIMM Modules All RIMM sockets must be populated to achieve continuity for termination at the Rambus interface. Continuity RIMMs (or "pass-through" modules) must be installed in the second RDRAM bank if memory is not installed. If any of the RIMM sockets are not populated, the computer will not complete the Power-On Self-Test (POST) and the BIOS beep codes will not be heard. 23

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Product Description
23
1.7 System Memory
CAUTION
Turn off the power and unplug the power cord before installing or removing RIMM modules.
Failure to do so could damage the memory and the board.
(After AC power is removed, the
standby power indicator LED should not be lit.
See Figure 11 on page 45 for the location of the
standby power indicator LED.)
✏
NOTE
The desktop boards D850EMD2/D850EMV2 support combinations of no more than 32 RDRAM
components per RDRAM bank.
If the total number of RDRAM components installed in all RIMM
sockets exceeds 64, the computer will not boot.
1.7.1
Memory Features
The 82850E MCH integrates two lock-stepped Direct Rambus banks, providing a processor-to-
memory bandwidth up to 3.2 GB/sec.
The desktop boards D850EMD2/D850EMV2 have four
RIMM sockets (two sockets for each bank) and support the following memory features:
•
Single- or double-sided RIMM configurations
•
Maximum of 32 Direct Rambus devices per bank
•
Memory configurations from 128 MB (minimum) to 2 GB (maximum), using 128 Mbit or
256 Mbit technology PC800-compliant RDRAM
•
Serial Presence Detect (SPD)
–
based configuration for optimal memory operation
•
Suspend to RAM support
•
ECC and non-ECC support
1.7.2
Continuity RIMM Modules
All RIMM sockets must be populated to achieve continuity for termination at the Rambus
interface.
Continuity RIMMs (or
“
pass-through
”
modules) must be installed in the second
RDRAM bank if memory is not installed.
If any of the RIMM sockets are not populated, the
computer will not complete the Power-On Self-Test (POST) and the BIOS beep codes will not be
heard.