Intel D815EEA2, Product Manual

Page: 15 / 96

Desktop Board Features
15
Main Memory
CAUTION
Remove the AGP video card before installing or upgrading memory to avoid interference with the
memory retention mechanism.
✏
NOTE
To be fully compliant with all applicable Intel
®
SDRAM memory specifications, the board should
be populated with DIMMs that support the Serial Presence Detect (SPD) data structure. If your
memory modules do not support SPD, you will see a notification to this effect on the screen at
power up. The BIOS will attempt to configure the memory controller for normal operation.
However, DIMMs may not function under the determined frequency.
✏
NOTE
Because the main system memory is also used as video memory, the board requires a 100 MHz
SDRAM DIMM even though the host bus frequency is 66 MHz. It is highly recommended that an
SPD DIMM be used, since this allows the BIOS to read the SPD data and program the chipset to
accurately configure memory settings for optimum performance. If non-SPD memory is installed,
the BIOS will attempt to correctly configure the memory settings, but performance and reliability
may be impacted.
The boards supports 168-pin SDRAM DIMMs as defined below:
•
168-pin SDRAM Dual Inline Memory Modules (DIMMs) with gold-plated contacts
•
Three DIMM slots are provided for flexible memory configurations
•
133 MHz SDRAM up to two double-sided DIMMs, or one double-sided DIMM and two
single-sided DIMMs
•
100 MHz SDRAM up to three double-sided DIMMs
•
Minimum system memory: 32 MB
•
Maximum system memory: 512 MB
✏
NOTE
The BIOS cannot determine DIMM size or type when not initialized. If more than 512 MB system
memory is installed, the BIOS displays a message at boot indicating memory above 512 MB has
not been initialized. The message indicates that additional information is available in Setup. The
first time the BIOS detects this condition, a pause follows the message with the option to enter
Setup or to <ESC> and continue to boot. The message continues to be displayed at boot time as
long as the condition exists, however, the BIOS will not pause on subsequent detection. Setup
displays the installed memory configuration and shows memory above 512 MB as “not
initialized.”