Tomcat i7221A S5151
Chapter 2: Board Installation
2-15
http://www.tyan.com
2.7 Installing Memory
Before installing memory, ensure that the memory you have is compatible with the
motherboard and processor. PC2700/PC3200 (DDR333/DDR400) modules are required.
Check the TYAN Web site at:
www.tyan.com
for details of the type of memory recommended
for your motherboard.
The following diagram shows common types of memory modules.
DDR Unbuffered ECC
DDR Unbuffered
Key points to note before installing memory:
•
128MB, 256MB, 512MB and 1GB Non-Reg/ECC or Non-Reg/Non- ECC
PC2700/PC3200
DDR memory modules are supported
•
All installed memory will be automatically detected and no jumpers or settings need
to be set.
•
The Tomcat i7221A S5151 supports up to 4GB of memory
•
Registered Memory is NOT supported
.
•
You can install either single or double-sided modules on this motherboard. Each
DIMM can work in single-channel mode or dual-channel mode. Please note that
memory modules of the same type and density are required while using dual-
channel DDR. Mismatched memory may cause system instability.
Refer to the following table for details of dual-channel DDR.
Channel A
Channel B
Dual -Channel Mode
DIMM1
(Blue)
DIMM2
(Black)
DIMM3
(Blue)
DIMM4
(Black)
System
Density
Two DIMM Symmetrical
Population
ü
ü
256MB~2GB
Two DIMM Symmetrical
Population
ü
ü
256MB~2GB
Four DIMM Symmetrical
Population
ü
ü
ü
ü
512MB~4GB
Note
1.
ü
= Installing 128MB ~ 1GB Memory modules
2.
Symmetrical DIMM’s must be identical
- Same DRAM Technology, eg 128M-bit, 256-bit, etc.
- Same DRAM bus width, eg x8 or x16
- Matched Sided DIMM ’s (Single Sided or Double Sided)
•
Supported System Bus Frequency and Memory Speed Combinations
CPU FSB
DDR DIMM Type
Memory Frequency
800MHz
PC2700 or PC3200
333MHz or 400MHz
533MHz
PC2700
333MHz
