Lenovo 4155 - Manual (Page 67)

Appendix B. System memory speed
The Intel Xeon microprocessor families compatible with this ThinkStation computer
feature an integrated memory controller, which provides the microprocessor with
direct access to the system memory. Because of this design, the system memory
speed will be determined by a number of factors, including the microprocessor
model and the type, speed, size (capacity), and number of DIMMs installed. Refer
to the following table for the information on the supported system memory speed
for your own computer model.
Table 1. System memory speed
DIMM Type and Speed PC3-10600U PC3-8500U PC3-8500R
DIMM Size (Capacity) 1 GB, 2 GB 1 GB, 2 GB
1 GB, 2 GB, 4
GB
8 GB
Number of DIMMs
Installed per
Microprocessor Bank
1 to 3 4 to 6 1 to 3 4 to 6 1 to 6 1 to 3 4 to 6
Microprocessor
Model
Intel
Xeon
E5502
800
MHz
800
MHz
800
MHz
800
MHz
800 MHz 800
MHz
800
MHz
Intel
Xeon
E5504
800
MHz
800
MHz
800
MHz
800
MHz
800 MHz 800
MHz
800
MHz
Intel
Xeon
E5506
800
MHz
800
MHz
800
MHz
800
MHz
800 MHz 800
MHz
800
MHz
Intel
Xeon
E5520
1066
MHz
1066
MHz
1066
MHz
1066
MHz
1066 MHz 1066
MHz
800
MHz
Intel
Xeon
E5530
1066
MHz
1066
MHz
1066
MHz
1066
MHz
1066 MHz 1066
MHz
800
MHz
Intel
Xeon
E5540
1066
MHz
1066
MHz
1066
MHz
1066
MHz
1066 MHz 1066
MHz
800
MHz
Intel
Xeon
E5550
1333
MHz
1066
MHz
1066
MHz
1066
MHz
1066 MHz 1066
MHz
800
MHz
Intel
Xeon
E5560
1333
MHz
1066
MHz
1066
MHz
1066
MHz
1066 MHz 1066
MHz
800
MHz
Intel
Xeon
E5570
1333
MHz
1066
MHz
1066
MHz
1066
MHz
1066 MHz 1066
MHz
800
MHz
Intel
Xeon
W5580
1333
MHz
1066
MHz
1066
MHz
1066
MHz
1066 MHz 1066
MHz
800
MHz
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