Supermicro H8DCR-3, Руководство пользователя

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Chapter 2: Installation
2-5
2-4 Installing Memory
CAUTION
Exercise extreme care when installing or removing memory modules
to prevent any possible damage.
1. Insert each memory module vertically into its slot, paying attention to the notch
along the bottom of the module to prevent inserting the module incorrectly (see
Figure 2-2). See support information below.
2. Gently press down on the memory module until it snaps into place.
Note: each processor has its own built-in memory controller. 128 MB, 256 MB,
512 MB, 1 GB, 2 GB* and 4 GB* memory modules are supported. It is highly
recommended that you remove the power cord from the system before installing
or changing any memory modules.
*With Opteron 246 C-stepping CPUs and above.
Support
The H8DCR-3/H8DCR-i supports single or dual-channel, registered ECC
DDR400/333/266 SDRAM.
Both interleaved and non-interleaved memory are supported, so you may populate
any number of DIMM slots. However, populating two adjacent slots at a time
with memory modules of the same size and type will result in interleaved (128-
bit) memory, which is faster than non-interleaved (64-bit) memory. See charts on
page 2-7.
Optimizing memory performance
With two processors installed, it is better to stagger pairs of DIMMs across both
sets of CPU DIMM slots, e.g. fi rst populate CPU1 slots 1A and 1B, then CPU2 slots
1A, and 1B, then the next two CPU1 slots, etc. This balances the load over both
CPUs to optimize performance.
Maximum memory (two CPUs)
32 GB for DDR266 and 16 GB for DDR400/333.