The IBM/Lenovo eServer pSeries 640 (7026-B80) uses 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
Base Memory 256MB (Removable) or 512MB (Removable)
Upgrade Slots 2 Slots for memory cards 16 Sockets (8 banks of 2) on memory cards
Maximum Memory 16GB
Maximum Module Size 8GB
CPU & Chipset IBM Power3-II 375 MHz
Bus Architecture ISA; PCI
Manufacturer Part Numbers
  • 7026-B80

We currently do not offer any upgrades or upgrades are currently unavailable for purchase online. Please contact us to order upgrades for this device.


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-F50/256 256MB Kit Kingston
KTM-H70/512 512MB Kit of 2 256MB SDRAM PC100 100MHz ECC 200pin DIMM Kingston OP22.2E-2
KTM44P170/1024 1GB 200pin 10ns DRAM Kit Kingston