American Megatrends, Inc., Olympus III User’s Guide (Series 875)
16
Step 2 Install Memory,
Continued
Supported Memory
The following table is a list of SDRAM types that are supported per bank:
DIMM
Capacity
Configuration DDR
SDRAM
Density
DDR SDRAM
Organization
Front-side
DDR SDRAM
Organization
Back-side
Number of
DDR SDRAM
Devices
64 MB
Single-Sided
64 Mbit
8 M x 8
empty
8
64 MB
Single-Sided
128 Mbit
8 M x 16
empty
4
128 MB
Double-Sided
64 Mbit
8 M x 8
8 M x 8
16
128 MB
Single-Sided
128 Mbit
16 M x 8
empty
8
128 MB
Single-Sided
256 Mbit
16 M x 16
empty
4
256 MB
Double-Sided
128 Mbit
16 M x 8
16 M x 8
16
256 MB
Single-Sided
256 Mbit
32 M x 8
empty
8
256 MB
Single-Sided
512 Mbit
32 M x 16
empty
4
512 MB
Double-Sided
256 Mbit
32 M x 8
32 M x 8
16
512 MB
Single-Sided
512 Mbit
64 M x 8
empty
8
1024 MB
Double-Sided
512 Mbit
64 M x 8
64 M x 8
16
Memory Configuration
The Olympus III motherboard has the following features for enhancing memory
throughput:
•
Dual Channel memory interface. The Olympus III motherboard has two
memory channels (CHA and CHB), each with two DIMM sockets.
•
Dynamic Addressing Mode. Dynamic mode minimizes overhead by reducing
memory accesses.
Characteristics of Dual and Single Channel Configuration with and without
Dynamic Mode:
Throughput
Level
Configuration Characteristics
Highest
Dual Channel with Dynamic Mode
All DIMMs matched
Higher
Dual Channel without Dynamic
Mode
•
DIMMs matched from Channel
A to Channel B
•
DIMMs not matched within
channels
Lower
Single Channel with Dynamic Mode
Single DIMM or DIMMs matched
within a channel
Lowest
Single Channel without Dynamic
Mode
DIMMs not matched
Cont’d
Summary of Contents for Olympus III
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