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RS/6000 7044 Model 170 Technical Overview 7
Memory
The system supports from 256 MB to 2 GB of ECC SDRAM using a 128-bit wide
memory bus. Memory bus speed varies dependent upon processor selection. The
enhanced memory controller uses a 95.1 MHz memory bus speed on the 333
MHz system and a 100 MHz memory bus speed on the 400 MHz system.
There are four memory slots available in the 44P Model 170. The Dual Inline
Memory Modules (DIMMs) are ordered and installed in pairs. The following
options are currently available:
• 256 MB (2 X 128 MB) SDRAM DIMMs (# 4110)
• 512 MB (2 X 256 MB) SDRAM DIMMs (# 4119)
• 1024 MB (2 X 512 MB) SDRAM DIMMs (# 4121)
SDRAM DIMMs are used in most of the RS/6000 systems currently available.
Reference current feature codes and part numbers to determine if DIMMs may be
interchanged between systems. Figure 4 shows the memory slot location for this
system.
Figure 4. 7044 170 - Memory Location Diagram
Memory modules must be installed in pairs using the correct slot configuration.
Slots J1 and J2 are a pair and slots J9 and J10 are a pair.
J10
J2
J9
J1