The IBM/Lenovo System x3455 (7940, 7984, 7986-xxx) uses DDR2 DIMM ECC REG PC2-5300 667MHz, ECC PC2-5300 667MHz memory upgrades as listed in the detailed specifications below. All memory and other upgrades compatible with this system are listed on this page.

Need Assistance? Please call and speak with one of our expert technicians at 800-240-8577 or US 404-935-4048 to verify exact system specs before ordering.
Memory Type DDR2 DIMM ECC REG PC2-5300 667MHz, ECC PC2-5300 667MHz
Base Memory 1 GB (Removable) or 2 GB (Removable)
Upgrade Slots 6 Sockets (3 Banks of 2) per processor 12 Sockets total
Maximum Memory 24 GB with single processor 48 GB with two processors
Maximum Module Size 8GB
CPU & Chipset ~
Bus Architecture PCI Express; SSD - SATA 3.5-inch
Notes Single processor systems only utilize six of the twelve DIMM sockets and therefore maximum memory is limited to 24GB. Two processor systems utilize all twelve DIMM sockets and can reach the system max of 48GB.
Manufacturer Part Numbers
  • 7940-xxx
  • 7984-xxx
  • 7986-xxx
Part Number 531ERKC7
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$23.99
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Part Number 531ERKC7H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$37.99
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Part Number 532ERKC7
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$43.99
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Part Number 53.2ERKC7
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$46.99
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Part Number 53.5ERKC7
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$46.99
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Part Number 531ERKC7-2
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$46.99
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Part Number 532ELVKC7
667MHz 240pin CL7 Low Power Chipkill ECC
Call to Order
$46.99
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Part Number 53.2ELVKC7
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$54.99
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Part Number 532ERKC7H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$69.99
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Part Number 534ERKC7
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$69.99
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Part Number 53.2ERKC7H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$74.99
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Part Number 53.5ERKC7H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$74.99
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Part Number 531ERKC7-2H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$74.99
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Part Number 532ELVKC7H
667MHz 240pin CL7 Low Power Chipkill ECC
Call to Order
$74.99
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Part Number 531ELVKC7
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$77.99
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Part Number 532ERKC7-2
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$86.99
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Part Number 53.2ELVKC7H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$87.99
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Part Number 53.2ERKC7-2
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$92.99
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Part Number 53.5ELVKC7
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$92.99
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Part Number 53.5ERKC7-2
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$92.99
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Part Number 531ERKC7-4
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$92.99
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Part Number 532ELVKC7-2
667MHz 240pin CL7 Low Power Chipkill ECC
Call to Order
$92.99
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Part Number SSD/64G
Call to Order
$99.99
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Part Number 53.2ELVKC7-2
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$108.99
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Part Number 534ERKC7H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$112.99
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Part Number 531ELVKC7H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$124.99
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Part Number 532ERKC7-2H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$139.99
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Part Number 534ERKC7-2
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$139.99
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Part Number SSD/32G
Call to Order
$139.99
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Part Number 53.2ERKC7-2H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$149.99
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Part Number 53.5ELVKC7H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$149.99
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Part Number 53.5ERKC7-2H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$149.99
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Part Number 531ERKC7-4H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$149.99
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Part Number 532ELVKC7-2H
667MHz 240pin CL7 Low Power Chipkill ECC
Call to Order
$149.99
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Part Number 531ELVKC7-2
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$154.99
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Part Number SSD/64GH
Call to Order
$159.99
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Part Number 532ERKC7-4
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$173.99
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Part Number 53.2ELVKC7-2H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$174.99
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Part Number 53.5ELVKC7-2
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$185.99
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Part Number 53.5ERKC7-4
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$185.99
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Part Number 532ELVKC7-4
667MHz 240pin CL7 Low Power Chipkill ECC
Call to Order
$185.99
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Part Number 534ERKC7-2H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$224.99
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Part Number SSD/32GH
Call to Order
$224.99
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Part Number 534ELVKC7
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$232.99
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Part Number 531ELVKC7-2H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$249.99
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Part Number 534ERKC7-4
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$278.99
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Part Number 532ERKC7-4H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$279.99
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Part Number 53.5ELVKC7-2H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$299.99
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Part Number 53.5ERKC7-4H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$299.99
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Part Number 532ELVKC7-4H
667MHz 240pin CL7 Low Power Chipkill ECC
Call to Order
$299.99
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Part Number 531ELVKC7-4
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$309.99
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Part Number 53.5ELVKC7-4
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$371.99
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Part Number 534ELVKC7H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$374.99
View Product
Part Number 534ERKC7-4H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$449.99
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Part Number 534ELVKC7-2
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$464.99
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Part Number 534ERPKC7-2
667MHz 240pin CL7 Registered Parity Chipkill ECC
In Stock
$464.99
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Part Number 538ELVKC7
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$464.99
View Product
Part Number 538ERKC7
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$464.99
View Product
Part Number 531ELVKC7-4H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$499.99
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Part Number 53.5ELVKC7-4H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$599.99
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Part Number 534ERPKC7-2H
667MHz 240pin CL7 Registered Parity Chipkill ECC
In Stock
$697.48
View Product
Part Number 534ELVKC7-2H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$749.99
View Product
Part Number 538ELVKC7H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$749.99
View Product
Part Number 538ERKC7H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$749.99
View Product
Part Number 534ELVKC7-4
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$929.99
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Part Number 538ELVKC7-2
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$929.99
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Part Number 538ERKC7-2
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$929.99
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Part Number 534ELVKC7-4H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$1499.99
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Part Number 538ELVKC7-2H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$1499.99
View Product
Part Number 538ERKC7-2H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$1499.99
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Part Number 538ELVKC7-4
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$1859.99
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Part Number 538ERKC7-4
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$1859.99
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Part Number 538ELVKC7-4H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$2999.99
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Part Number 538ERKC7-4H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$2999.99
View Product
Part Number 538ELVKC7-4
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$1859.99
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Part Number 538ERKC7-4
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$1859.99
View Product
Part Number 538ELVKC7-4H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$2999.99
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Part Number 538ERKC7-4H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$2999.99
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Part Number 534ERKC7-4
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$278.99
View Product
Part Number 534ERKC7-4H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$449.99
View Product
Part Number 534ELVKC7-4
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$929.99
View Product
Part Number 538ELVKC7-2
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$929.99
View Product
Part Number 538ERKC7-2
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$929.99
View Product
Part Number 534ELVKC7-4H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$1499.99
View Product
Part Number 538ELVKC7-2H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$1499.99
View Product
Part Number 538ERKC7-2H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$1499.99
View Product
Part Number 534ERKC7-2
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$139.99
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Part Number 532ERKC7-4
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$173.99
View Product
Part Number 532ELVKC7-4
667MHz 240pin CL7 Low Power Chipkill ECC
Call to Order
$185.99
View Product
Part Number 534ERKC7-2H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$224.99
View Product
Part Number 532ERKC7-4H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$279.99
View Product
Part Number 532ELVKC7-4H
667MHz 240pin CL7 Low Power Chipkill ECC
Call to Order
$299.99
View Product
Part Number 534ELVKC7-2
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$464.99
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Part Number 534ERPKC7-2
667MHz 240pin CL7 Registered Parity Chipkill ECC
In Stock
$464.99
View Product
Part Number 538ELVKC7
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$464.99
View Product
Part Number 538ERKC7
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$464.99
View Product
Part Number 534ERPKC7-2H
667MHz 240pin CL7 Registered Parity Chipkill ECC
In Stock
$697.48
View Product
Part Number 534ELVKC7-2H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$749.99
View Product
Part Number 538ELVKC7H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$749.99
View Product
Part Number 538ERKC7H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$749.99
View Product
Part Number 534ERKC7
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$69.99
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Part Number 532ERKC7-2
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$86.99
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Part Number 531ERKC7-4
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$92.99
View Product
Part Number 532ELVKC7-2
667MHz 240pin CL7 Low Power Chipkill ECC
Call to Order
$92.99
View Product
Part Number 534ERKC7H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$112.99
View Product
Part Number 532ERKC7-2H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$139.99
View Product
Part Number 531ERKC7-4H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$149.99
View Product
Part Number 532ELVKC7-2H
667MHz 240pin CL7 Low Power Chipkill ECC
Call to Order
$149.99
View Product
Part Number 534ELVKC7
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$232.99
View Product
Part Number 531ELVKC7-4
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$309.99
View Product
Part Number 534ELVKC7H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$374.99
View Product
Part Number 531ELVKC7-4H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$499.99
View Product
Part Number 532ERKC7
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$43.99
View Product
Part Number 531ERKC7-2
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$46.99
View Product
Part Number 532ELVKC7
667MHz 240pin CL7 Low Power Chipkill ECC
Call to Order
$46.99
View Product
Part Number 532ERKC7H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$69.99
View Product
Part Number 531ERKC7-2H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$74.99
View Product
Part Number 532ELVKC7H
667MHz 240pin CL7 Low Power Chipkill ECC
Call to Order
$74.99
View Product
Part Number 531ELVKC7-2
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$154.99
View Product
Part Number 53.5ERKC7-4
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$185.99
View Product
Part Number 531ELVKC7-2H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$249.99
View Product
Part Number 53.5ERKC7-4H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$299.99
View Product
Part Number 53.5ELVKC7-4
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$371.99
View Product
Part Number 53.5ELVKC7-4H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$599.99
View Product
Part Number 531ERKC7
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$23.99
View Product
Part Number 531ERKC7H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$37.99
View Product
Part Number 531ELVKC7
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$77.99
View Product
Part Number 53.5ERKC7-2
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$92.99
View Product
Part Number 531ELVKC7H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$124.99
View Product
Part Number 53.5ERKC7-2H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$149.99
View Product
Part Number 53.5ELVKC7-2
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$185.99
View Product
Part Number 53.5ELVKC7-2H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$299.99
View Product
Part Number 53.5ERKC7
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$46.99
View Product
Part Number 53.5ERKC7H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$74.99
View Product
Part Number 53.2ERKC7-2
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$92.99
View Product
Part Number 53.5ELVKC7
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$92.99
View Product
Part Number 53.2ELVKC7-2
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$108.99
View Product
Part Number 53.2ERKC7-2H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$149.99
View Product
Part Number 53.5ELVKC7H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$149.99
View Product
Part Number 53.2ELVKC7-2H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$174.99
View Product
Part Number 53.2ERKC7
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$46.99
View Product
Part Number 53.2ELVKC7
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$54.99
View Product
Part Number 53.2ERKC7H
667MHz 240pin CL7 Registered Chipkill ECC
In Stock
$74.99
View Product
Part Number 53.2ELVKC7H
667MHz 240pin CL7 Low Power Chipkill ECC
In Stock
$87.99
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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
KTM2759K2/4G 4GB Kit of 2 2GB DDR2 PC2-5300 667MHz ECC REG Chipkill DIMM Kingston 532ERKC7-2
KTM2759K2/8G 8GB Kit of 2 4GB DDR2 PC2-5300 667MHz ECC REG Parity Chipkill DIMM Kingston 534ERPKC7-2
SNA-BR/35 2.5 to 3.5in Brackets and Screws Kingston
SNE125-S2/32GB 32GB Solid State Drive Kingston SSD/32G
SNE125-S2/64GB 64GB Solid State Drive Kingston SSD/64G