Appendix A. 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 2. DIMM type and speed: PC3-10600E
DIMM operating voltage
Microprocessor model
Memory frequency
Intel Xeon E5-2603, E5-2609
1066 MHz
1.5 V
Intel Xeon E5-2620, E5-2630/2630L,
E5-2637, E5-2640, E5-2643,
E5-2667, E5-2650/2650L, E5-2660,
E5-2665, E5-2670, E5-2680,
E5-2685, E5-2690
1333 MHz
Table 3. DIMM type and speed: PC3-10600R
DIMM operating voltage
Microprocessor model
Memory frequency
Intel Xeon E5-2603, E5-2609
1066 MHz
1.35 V, 1.5 V
Intel Xeon E5-2620, E5-2630/2630L,
E5-2637, E5-2640, E5-2643 E5-2667,
E5-2650/2650L, E5-2660, E5-2665,
E5-2670, E5-2680, E5-2685, E5-2690
1333 MHz
Table 4. DIMM type and speed: PC3-12800R
DIMM operating voltage
Microprocessor model
Memory frequency
Intel Xeon E5-2603, E5-2609
1066 MHz
1.35 V
Intel Xeon E5-2620, E5-2630/2630L,
E5-2637, E5-2640, E5-2643,
E5-2650/2650L, E5-2660, E5-2665,
E5-2667, E5-2670, E5-2680,
E5-2685, E5-2690,
1333 MHz
Intel Xeon E5-2603, E5-2609
1066 MHz
Intel Xeon E5-2620, E5-2630/2630L,
E5-2640, E5-2667
1333 MHz
1.5 V
E5-2637, E5-2643, E5-2650/2650L,
E5-2660, E5-2665, E5-2670,
E5-2680, E5-2685, E5-2690,
1600 MHz
© Copyright Lenovo 2012
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