Add-on modules / Upgrading
A26361-D1692-Z121-1-7619, Edition 1 17
Installing the Memory Before attempting to install any memory, make sure that the mem ory you have is compatible with
the motherboard as well as the processor.
The following diagram shows common types of DDR SDRAM modules:
Here are a few key points to note before installing memory into your mainboard D1692.
• Always install memory beginning with CPU0 / DIMMA1 and CPU0 / DIMMA2.
• In order to access memory on CPU1; both processors must be installed.
• Configure memory symmetrically for each CPU for best performance.
• AMD OpteronTM processors support 64bit (non-interleaved) or 128bit (interleaved) memory
configurations (See chart).
• At least one Registered DDR SDRAM module (CPU0/DIMMA1 or CPU0/DIMMB1) must be
installed for the system to turn on and POST (power on self test).
• 128 MB, 256 MB, 512 MB, 1 GB, 2 GB and 4 GB Registered PC3200 / PC2700 / PC2100 /
PC1600 DDR SDRAM memory modules are supported.
• 4GB memory modules run at a speed of 266 MHz.
• All installed memory will be automatically detected.
• The mainboard D1692 supports up to 32 GB with two CPUs installed.
• Use only identical DIMMs for one channel.
• Memory must be installed in pairs of DIMMs (CPU0 / DIMMA1 and CPU0 / DIMMA2,
CPU0 / DIMMB1 and CPU0 / DIMMB2, CPU1 / DIMMA1 and CPU1 / DIMMA2,
CPU1 / DIMMB1 and CPU1 / DIMMA2).