System Memory Configuration - Nvidia NFORCE2 ULTRA 400 400 User Manual

3-3 System Memory Configuration

Memory Layout
The mainboard accommodates three PC1600/2100/2700/3200 184-pin DIMMs (Dual In-
line Memory Modules):
• Supports up to 3.0GB of 200/266/333/400MHz DDR SDRAM
• Supports up to 3 DDR DIMMs (refer to Table 1)
• Supports 64/128/256/512Mb, 1Gb x8 & x16 DRAMs
• Supports 128-bit
• Supports unbuffered and non-ECC DIMMs
• Supports configurations defined in the JEDEC DDR DIMM specification
Figure 6 and Table 1 show several possible memory configurations.
<Figure 6>
<Table 1>
DIMM#1
DIMM#2
DIMM#3
NOTES:
• DIMM#2 & #3 shared same memory bus and DIMM#1 is dedicated for 2
channel memory bus.
We recommend you to use DIMM socket of the same color to obtain the best
memory performance.
- For one DIMM memory configuration, the DIMM can be located on any of
DIMM#1 to DIMM#3 in 64-bit mode
- For two DIMMs memory configuration, the DIMMs should be located on
DIMM#2/#3 and DIMM#1 in 128-bit mode. It is preferable to use DRAM
DIMM of the same type and size.
- For three DIMMs memory configuration, the DIMMs can be located on all
DIMM sockets in 128-bit mode.
• Using non-compliant memory with higher bus speeds (overclocking) may
severely compromise the integrity of the system.
dual channel memory architecture
DDR DIMM 2
DDR DIMM 3
DDR DIMM 1
1 DIMM
(64-bit)
SS/DS
SS/DS
SS/DS
Bank 1
Bank 0
2 DIMMs 2 DIMMs
(64-bit) (128-bit)
SS/DS SS/DS
SS/DS SS/DS
SS/DS SS/DS
Installation
3 DIMMs
(128-bit)
SS/DS
SS/DS
SS/DS
nd
Page 3-5