Lenovo 4158, 4155, 4218 manual Appendix B. System memory speed

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	8 GB
						GB
Number of DIMMs
Installed per		1 to 3	4 to 6	1 to 3	4 to 6	1 to 6	1 to 3	4 to 6
Microprocessor Bank
	Intel	800	800	800	800	800 MHz	800	800
	Xeon	MHz	MHz	MHz	MHz		MHz	MHz
	E5502
	Intel	800	800	800	800	800 MHz	800	800
	Xeon	MHz	MHz	MHz	MHz		MHz	MHz
	E5504
	Intel	800	800	800	800	800 MHz	800	800
	Xeon	MHz	MHz	MHz	MHz		MHz	MHz
	E5506
	Intel	1066	1066	1066	1066	1066 MHz	1066	800
	Xeon	MHz	MHz	MHz	MHz		MHz	MHz
	E5520
	Intel	1066	1066	1066	1066	1066 MHz	1066	800
	Xeon	MHz	MHz	MHz	MHz		MHz	MHz
Microprocessor	E5530
Model	Intel	1066	1066	1066	1066	1066 MHz	1066	800
	Xeon	MHz	MHz	MHz	MHz		MHz	MHz
	E5540
	Intel	1333	1066	1066	1066	1066 MHz	1066	800
	Xeon	MHz	MHz	MHz	MHz		MHz	MHz
	E5550
	Intel	1333	1066	1066	1066	1066 MHz	1066	800
	Xeon	MHz	MHz	MHz	MHz		MHz	MHz
	E5560
	Intel	1333	1066	1066	1066	1066 MHz	1066	800
	Xeon	MHz	MHz	MHz	MHz		MHz	MHz
	E5570
	Intel	1333	1066	1066	1066	1066 MHz	1066	800
	Xeon	MHz	MHz	MHz	MHz		MHz	MHz
	W5580

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