The HP/Compaq Integrity rx4640 uses DDR DIMM REG 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.

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 DDR DIMM REG PC2100 266MHz
Base Memory 1GB (Removable)
Upgrade Slots 16 Sockets (4 banks of 4) using HP p/n: A9738A 32 Sockets (8 banks of 4) using HP p/n: A9739A
Maximum Memory 64GB
Maximum Module Size 4GB
CPU & Chipset Intel Itanium 2 1.3 GHz Intel Itanium 2 1.6 GHz
Bus Architecture PCI
Manufacturer Part Numbers
  • A6961A
  • A6962A
Part Number 31.1RC3
266MHz 184pin CL3 Registered
In Stock
$15.99
View Product
Part Number 31.1RC3H
266MHz 184pin CL3 Registered
In Stock
$24.99
View Product
Part Number 31.5RC3
266MHz 184pin CL3 Registered
In Stock
$63.99
View Product
Part Number 31.2RC3
266MHz 184pin CL3 Registered
In Stock
$65.99
View Product
Part Number 311RC3
266MHz 184pin CL3 Registered
Call to Order
$69.99
View Product
Part Number 31.5RC3H
266MHz 184pin CL3 Registered
In Stock
$102.99
View Product
Part Number 31.2RC3H
266MHz 184pin CL3 Registered
In Stock
$104.99
View Product
Part Number 311RC3H
266MHz 184pin CL3 Registered
Call to Order
$112.99
View Product
Part Number 31.5RC3-2
266MHz 184pin CL3 Registered
In Stock
$127.99
View Product
Part Number 31.2RC3-2
266MHz 184pin CL3 Registered
In Stock
$130.99
View Product
Part Number 311RC3-2
266MHz 184pin CL3 Registered
Call to Order
$139.99
View Product
Part Number 312RC3
266MHz 184pin CL3 Registered
Call to Order
$154.99
View Product
Part Number 31.5RC3-2H
266MHz 184pin CL3 Registered
In Stock
$204.99
View Product
Part Number 31.2RC3-2H
266MHz 184pin CL3 Registered
In Stock
$209.99
View Product
Part Number 311RC3-2H
266MHz 184pin CL3 Registered
Call to Order
$224.99
View Product
Part Number 312RC3H
266MHz 184pin CL3 Registered
Call to Order
$249.99
View Product
Part Number 31.2RC3-4
266MHz 184pin CL3 Registered
In Stock
$260.99
View Product
Part Number 311RC3-4
266MHz 184pin CL3 Registered
Call to Order
$278.99
View Product
Part Number 31.2RC3-4H
266MHz 184pin CL3 Registered
In Stock
$419.99
View Product
Part Number 311RC3-4H
266MHz 184pin CL3 Registered
Call to Order
$449.99
View Product
Part Number 311RC3-4
266MHz 184pin CL3 Registered
Call to Order
$278.99
View Product
Part Number 311RC3-4H
266MHz 184pin CL3 Registered
Call to Order
$449.99
View Product
Part Number 311RC3-2
266MHz 184pin CL3 Registered
Call to Order
$139.99
View Product
Part Number 312RC3
266MHz 184pin CL3 Registered
Call to Order
$154.99
View Product
Part Number 311RC3-2H
266MHz 184pin CL3 Registered
Call to Order
$224.99
View Product
Part Number 312RC3H
266MHz 184pin CL3 Registered
Call to Order
$249.99
View Product
Part Number 311RC3
266MHz 184pin CL3 Registered
Call to Order
$69.99
View Product
Part Number 311RC3H
266MHz 184pin CL3 Registered
Call to Order
$112.99
View Product
Part Number 31.5RC3-2
266MHz 184pin CL3 Registered
In Stock
$127.99
View Product
Part Number 31.5RC3-2H
266MHz 184pin CL3 Registered
In Stock
$204.99
View Product
Part Number 31.2RC3-4
266MHz 184pin CL3 Registered
In Stock
$260.99
View Product
Part Number 31.2RC3-4H
266MHz 184pin CL3 Registered
In Stock
$419.99
View Product
Part Number 31.5RC3
266MHz 184pin CL3 Registered
In Stock
$63.99
View Product
Part Number 31.5RC3H
266MHz 184pin CL3 Registered
In Stock
$102.99
View Product
Part Number 31.2RC3-2
266MHz 184pin CL3 Registered
In Stock
$130.99
View Product
Part Number 31.2RC3-2H
266MHz 184pin CL3 Registered
In Stock
$209.99
View Product
Part Number 31.2RC3
266MHz 184pin CL3 Registered
In Stock
$65.99
View Product
Part Number 31.2RC3H
266MHz 184pin CL3 Registered
In Stock
$104.99
View Product
Part Number 31.1RC3
266MHz 184pin CL3 Registered
In Stock
$15.99
View Product
Part Number 31.1RC3H
266MHz 184pin CL3 Registered
In Stock
$24.99
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
KTH-RXI2/2G 2GB Kit of 2 1GB DDR PC2100 266MHz REG DIMM Kingston 311RC3-2
KTH-RXI2/4G 4GB Kit of 2 2GB DDR PC2100 266MHz REG DIMM Kingston 312RC3-2
KTH-RXI2/8G 8GB Kit of 4 2GB DDR PC2100 266MHz REG DIMM Kingston 312RC3-4
KTH-RXI2/16G 16GB Kit of 4 4GB DDR PC2100 266MHz REG DIMM Kingston 314RC3-4