The IBM/Lenovo System x3250 M3 (4251, 4252, 4261-xxx) uses DDR3 DIMM ECC REG PC3-8500 1066MHz, ECC REG PC3-10600 1333MHz, ECC PC3-10600 1333MHz memory upgrades as listed in the detailed specifications below. All memory and other upgrades compatible with this system are listed on this page.

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Memory Type DDR3 DIMM ECC REG PC3-8500 1066MHz, ECC REG PC3-10600 1333MHz, ECC PC3-10600 1333MHz
Base Memory 2 GB (Removable)
Upgrade Slots 6 Sockets
Maximum Memory 16 GB ECC UDIMMs 32 GB Reg ECC RDIMMs
Maximum Module Size
CPU & Chipset ~
Bus Architecture PCI Express; PCI-X; SSD - SATA 2.5-inch 9.5mm; SSD - SATA 3.5-inch
Notes Due to chipset limitations on the Intel Xeon 34xx processors the following rules apply: Unbuffered ECC DIMMs are limited to TWO Dual Channel Banks (4 DIMMs) per processor Only four Quad Rank modules are supported, two Quad Rank modules per bank When two Quad Rank modules are installed per bank, the processor will automatically clock them down to 800MHz. This system supports either Registered ECC or Unbuffered ECC memory. Mixing Registered ECC and Unbuffered ECC modules is not supported within this system.
Manufacturer Part Numbers
  • 4251-xxx
  • 4252-xxx
  • 4261-xxx
Part Number 822EC9
1333MHz 240pin CL9 ECC
In Stock
$26.99
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Part Number 824ERTC9
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$30.99
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Part Number 822EC9H
1333MHz 240pin CL9 ECC
In Stock
$42.99
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Part Number 824EC9
1333MHz 240pin CL9 ECC
In Stock
$46.99
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Part Number 822ERSTC9
1333MHz 240pin CL9 Registered Single Rank Thermal Sensor ECC
In Stock
$48.99
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Part Number 822ESC9
1333MHz 240pin CL9 Single Rank ECC
In Stock
$48.99
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Part Number 824ERTC9H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$49.99
View Product
Part Number 824EC9H
1333MHz 240pin CL9 ECC
In Stock
$74.99
View Product
Part Number 822ERSTC9H
1333MHz 240pin CL9 Registered Single Rank Thermal Sensor ECC
In Stock
$77.99
View Product
Part Number 822ESC9H
1333MHz 240pin CL9 Single Rank ECC
In Stock
$77.99
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Part Number 818ERQTC9
1066MHz 240pin CL9 Registered Quad Rank Thermal Sensor ECC
In Stock
$92.99
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Part Number 818ERQTC9H
1066MHz 240pin CL9 Registered Quad Rank Thermal Sensor ECC
In Stock
$149.99
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Part Number 818ERQTC9
1066MHz 240pin CL9 Registered Quad Rank Thermal Sensor ECC
In Stock
$92.99
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Part Number 818ERQTC9H
1066MHz 240pin CL9 Registered Quad Rank Thermal Sensor ECC
In Stock
$149.99
View Product
Part Number 824ERTC9
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$30.99
View Product
Part Number 824EC9
1333MHz 240pin CL9 ECC
In Stock
$46.99
View Product
Part Number 824ERTC9H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$49.99
View Product
Part Number 824EC9H
1333MHz 240pin CL9 ECC
In Stock
$74.99
View Product
Part Number 822EC9
1333MHz 240pin CL9 ECC
In Stock
$26.99
View Product
Part Number 822EC9H
1333MHz 240pin CL9 ECC
In Stock
$42.99
View Product
Part Number 822ERSTC9
1333MHz 240pin CL9 Registered Single Rank Thermal Sensor ECC
In Stock
$48.99
View Product
Part Number 822ESC9
1333MHz 240pin CL9 Single Rank ECC
In Stock
$48.99
View Product
Part Number 822ERSTC9H
1333MHz 240pin CL9 Registered Single Rank Thermal Sensor ECC
In Stock
$77.99
View Product
Part Number 822ESC9H
1333MHz 240pin CL9 Single Rank ECC
In Stock
$77.99
View Product

Upgrade References

The table below are references to other manufacturer part numbers which are specific to this device, have identical specifications to our components. This information is made available for your reference.
Part# Source References
KTM-SX310Q8/8G 8GB DDR3 PC3-8500 1066MHz ECC REG Quad Rank Thermal Sensor DIMM Kingston 818ERQTC9
KTM-SX313S/2G 2GB DDR3 PC3-10600 1333MHz ECC REG Single Rank Thermal Sensor DIMM Kingston 822ERSTC9
KTM-SX3138/4G 4GB DDR3 PC3-10600 1333MHz ECC REG Thermal Sensor DIMM Kingston 824ERTC9
KTM-SX3138K3/12G 12GB 1333MHz Reg ECC x8 Kit Kingston
KTM-SX313E/2G 2GB DDR3 PC3-10600 1333MHz ECC DIMM Kingston 822EC9
KTM-SX313ES/2G 2GB DDR3 PC3-10600 1333MHz ECC Single Rank DIMM Kingston 822ESC9
KTM-SX313E/4G 4GB DDR3 PC3-10600 1333MHz ECC DIMM Kingston 824EC9
SNA-BR/35 2.5 to 3.5in Brackets and Screws Kingston
SNA-DC/35 2.5 to 3.5in SATA Drive Carrier Kingston