Lenovo 8753 Producthandleiding - Pagina 10

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Table 4. Memory options

Part

Feature

Description

number

code

RDIMMs - 1866 MHz

00D5048

A3QL

16GB (1x16GB, 2Rx4, 1.5V) PC3-14900 CL13 ECC DDR3

1866MHz LP RDIMM

00D5032

A3QG

8GB (1x8GB, 1Rx4, 1.5V) PC3-14900 CL13 ECC DDR3

1866MHz LP RDIMM

00D5020* A3QD*

4GB (1x4GB, 1Rx4, 1.5V) PC3-14900 CL13 ECC DDR3

1866MHz LP RDIMM

RDIMMs - 1600 MHz

46W0672 A3QM

16GB (1x16GB, 2Rx4, 1.35V) PC3L-12800 CL11 ECC DDR3

1600MHz LP RDIMM

00D5036

A3QH

8GB (1x8GB, 1Rx4, 1.35V) PC3L-12800 CL11 ECC DDR3

1600MHz LP RDIMM

00D5024

A3QE

4GB (1x4GB, 1Rx4, 1.35V) PC3L-12800 CL11 ECC DDR3

1600MHz LP RDIMM

LRDIMMs

46W0761 A47K

32GB (1x32GB, 4Rx4, 1.5V) PC3-14900 CL13 ECC DDR3

1866MHz LP LRDIMM

* Withdrawn from marketing

The following rules apply when selecting the memory configuration:

The server supports RDIMMs and LRDIMMs. UDIMMs are not supported.

Mixing different types of memory (RDIMMs and LRDIMMs) is not supported.

Mixing 1.5 V and 1.35 V DIMMs in the same server is supported; in such a case, all DIMMs operate

at 1.5 V.

The maximum number of ranks per one channel is eight (with the exception of Load Reduced

DIMMs, where more than eight ranks are supported, because one quad-rank LRDIMM provides the

same electrical load on a memory bus as a single-rank RDIMM).

The maximum quantity of DIMMs that can be installed in the server depends on the number of

processors installed. The table shows the maximum when all four processors are installed. When

two processors are installed, the maximum quantity supported is a half of the quantity that is shown.

All DIMMs in the server operate at the same speed, which is determined as the lowest value of:

Memory speed that is supported by the specific processor.

Lowest of maximum operating speeds for selected memory configuration that depends on

rated speed, operating voltage, and quantity of DIMMs per channel, as shown under "Max.

operating speed" section in the next table.

Table highlighting

The entries highlighted in

memory frequencies than the Intel processor specification. In some instances, this configuration

also results larger memory capacity that the specification recommends.

Tables cells highlighted with a gray background indicate when the specific combination of DIMM

voltage and number of DIMMs per channel still allows the DIMMs to operate at rated speed

Lenovo System x3750 M4 (8753)

red text

in the following table indicate that the x3750 M4 supports higher

Maximum

Models

supported

where

used

48 (12 per

processor)

48 (12 per

8753-

processor)

A1x

48 (12 per

processor)

48 (12 per

processor)

48 (12 per

All other

processor)

8753

models

48 (12 per

processor)

48 (12 per

processor)