The IBM/Lenovo IntelliStation E Pro P4 (6226-2,3,4,5xx) uses DDR DIMM ECC PC2100 266MHz 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 DDR DIMM ECC PC2100 266MHz
Base Memory 256MB (Removable)
Upgrade Slots 2 Sockets
Maximum Memory 2GB
Maximum Module Size 1GB
CPU & Chipset Intel Pentium 4 2 GHz Intel 845E Intel Pentium 4 2.8 GHz Intel 845E
Bus Architecture PCI
Manufacturer Part Numbers
  • 6226-2xx
  • 6226-3xx
  • 6226-4xx
  • 6226-5xx
Part Number 31.1EC3
266MHz 184pin CL3 ECC
Call to Order
$30.99
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Part Number 31.2EC3
266MHz 184pin CL3 ECC
Call to Order
$34.99
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Part Number 311EC3
266MHz 184pin CL3 ECC
In Stock
$38.99
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Part Number 31.5EC3
266MHz 184pin CL3 ECC
Call to Order
$40.99
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Part Number 31.1EC3H
266MHz 184pin CL3 ECC
Call to Order
$49.99
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Part Number 31.2EC3H
266MHz 184pin CL3 ECC
Call to Order
$54.99
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Part Number 311EC3H
266MHz 184pin CL3 ECC
In Stock
$62.99
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Part Number 31.5EC3H
266MHz 184pin CL3 ECC
Call to Order
$64.99
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Part Number 31.2EC3-2
266MHz 184pin CL3 ECC
Call to Order
$68.99
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Part Number 311EC3-2
266MHz 184pin CL3 ECC
In Stock
$77.99
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Part Number 31.5EC3-2
266MHz 184pin CL3 ECC
Call to Order
$80.99
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Part Number 31.2EC3-2H
266MHz 184pin CL3 ECC
Call to Order
$109.99
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Part Number 311EC3-2H
266MHz 184pin CL3 ECC
In Stock
$124.99
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Part Number 31.5EC3-2H
266MHz 184pin CL3 ECC
Call to Order
$129.99
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Part Number 311EC3-2
266MHz 184pin CL3 ECC
In Stock
$77.99
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Part Number 311EC3-2H
266MHz 184pin CL3 ECC
In Stock
$124.99
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Part Number 311EC3
266MHz 184pin CL3 ECC
In Stock
$38.99
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Part Number 311EC3H
266MHz 184pin CL3 ECC
In Stock
$62.99
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Part Number 31.5EC3-2
266MHz 184pin CL3 ECC
Call to Order
$80.99
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Part Number 31.5EC3-2H
266MHz 184pin CL3 ECC
Call to Order
$129.99
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Part Number 31.5EC3
266MHz 184pin CL3 ECC
Call to Order
$40.99
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Part Number 31.5EC3H
266MHz 184pin CL3 ECC
Call to Order
$64.99
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Part Number 31.2EC3-2
266MHz 184pin CL3 ECC
Call to Order
$68.99
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Part Number 31.2EC3-2H
266MHz 184pin CL3 ECC
Call to Order
$109.99
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Part Number 31.2EC3
266MHz 184pin CL3 ECC
Call to Order
$34.99
View Product
Part Number 31.2EC3H
266MHz 184pin CL3 ECC
Call to Order
$54.99
View Product
Part Number 31.1EC3
266MHz 184pin CL3 ECC
Call to Order
$30.99
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Part Number 31.1EC3H
266MHz 184pin CL3 ECC
Call to Order
$49.99
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
KTM0067/512 512MB DDR PC2100 266MHz ECC DIMM Kingston 31.5EC3
KTM0067/1G 1GB DDR PC2100 266MHz ECC DIMM Kingston 311EC3