The IBM/Lenovo ThinkStation C20 uses DDR3 DIMM 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.

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 DDR3 DIMM ECC REG PC3-10600 1333MHz, ECC PC3-10600 1333MHz
Base Memory 2 GB (Removable) or 4 GB (Removable)
Upgrade Slots 3 Sockets (1 bank of 3) per CPU 6 Sockets (2 Banks of 3) using two CPUs
Maximum Memory 24 GB ECC UDIMMs 48 GB Reg ECC RDIMMs
Maximum Module Size 8GB
CPU & Chipset Intel Xeon Intel 5520
Bus Architecture PCI; PCI Express; SSD - SATA 3.5-inch
Notes We's DDR3-1333 modules automatically clock down to 1066MHz and 800MHz depending on which Intel Xeon model is used. 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
  • 4262-xxx
  • 4263-xxx
  • 4265-xxx
Part Number 82.5EC9
1333MHz 240pin CL9 ECC
In Stock
$18.99
View Product
Part Number 82.5ERTC9
1333MHz 240pin CL9 Registered Thermal Sensor ECC
Call to Order
$18.99
View Product
Part Number 821EC9
1333MHz 240pin CL9 ECC
In Stock
$18.99
View Product
Part Number 821ERTC9
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$18.99
View Product
Part Number 822EC9
1333MHz 240pin CL9 ECC
In Stock
$26.99
View Product
Part Number 82.5EC9H
1333MHz 240pin CL9 ECC
In Stock
$29.99
View Product
Part Number 82.5ERTC9H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
Call to Order
$29.99
View Product
Part Number 821EC9H
1333MHz 240pin CL9 ECC
In Stock
$29.99
View Product
Part Number 821ERTC9H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$29.99
View Product
Part Number 824ERTC9
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$30.99
View Product
Part Number 828ERTC9
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$35.99
View Product
Part Number 821EC9-2
1333MHz 240pin CL9 ECC
In Stock
$37.99
View Product
Part Number 821ERTC9-2
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$37.99
View Product
Part Number 822ERTC9
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$40.99
View Product
Part Number 822EC9H
1333MHz 240pin CL9 ECC
In Stock
$42.99
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 822EC9-2
1333MHz 240pin CL9 ECC
In Stock
$52.99
View Product
Part Number 828ERTC9H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$57.99
View Product
Part Number 821EC9-2H
1333MHz 240pin CL9 ECC
In Stock
$59.99
View Product
Part Number 821ERTC9-2H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$59.99
View Product
Part Number 824ERTC9-2
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$61.99
View Product
Part Number 822ERTC9H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$64.99
View Product
Part Number 828ERTC9-2
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$71.99
View Product
Part Number 824EC9H
1333MHz 240pin CL9 ECC
In Stock
$74.99
View Product
Part Number 822ERTC9-2
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$80.99
View Product
Part Number 822EC9-2H
1333MHz 240pin CL9 ECC
In Stock
$84.99
View Product
Part Number 828EC9
1333MHz 240pin CL9 ECC
In Stock
$85.99
View Product
Part Number 824EC9-2
1333MHz 240pin CL9 ECC
In Stock
$92.99
View Product
Part Number 824ERTC9-3
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$92.99
View Product
Part Number 824ERTC9-2H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$99.99
View Product
Part Number SSD/64G
Call to Order
$99.99
View Product
Part Number SSD/64GY
Call to Order
$99.99
View Product
Part Number 828ERDTC9-3
1333MHz 240pin CL9 Registered Dual Rank Thermal Sensor ECC
In Stock
$106.99
View Product
Part Number 828ERTC9-3
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$106.99
View Product
Part Number 828ERTC9-2H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$114.99
View Product
Part Number SSD/30G
Call to Order
$123.99
View Product
Part Number SSD/80G
Call to Order
$123.99
View Product
Part Number 822ERTC9-2H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$129.99
View Product
Part Number 828EC9H
1333MHz 240pin CL9 ECC
In Stock
$137.99
View Product
Part Number 824EC9-3
1333MHz 240pin CL9 ECC
In Stock
$139.99
View Product
Part Number SSD/96G
Call to Order
$148.99
View Product
Part Number 824EC9-2H
1333MHz 240pin CL9 ECC
In Stock
$149.99
View Product
Part Number 824ERTC9-3H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$149.99
View Product
Part Number SSD/64GH
Call to Order
$159.99
View Product
Part Number SSD/64GYH
Call to Order
$159.99
View Product
Part Number 828EC9-2
1333MHz 240pin CL9 ECC
In Stock
$170.99
View Product
Part Number 828ERDTC9-3H
1333MHz 240pin CL9 Registered Dual Rank Thermal Sensor ECC
In Stock
$172.99
View Product
Part Number 828ERTC9-3H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$172.99
View Product
Part Number SSD/30GH
Call to Order
$199.99
View Product
Part Number SSD/80GH
Call to Order
$199.99
View Product
Part Number 824EC9-3H
1333MHz 240pin CL9 ECC
In Stock
$224.99
View Product
Part Number SSD/96GH
Call to Order
$239.99
View Product
Part Number 828EC9-3
1333MHz 240pin CL9 ECC
In Stock
$255.99
View Product
Part Number SSD/128G
Call to Order
$263.99
View Product
Part Number SSD/128GY
Call to Order
$263.99
View Product
Part Number 828EC9-2H
1333MHz 240pin CL9 ECC
In Stock
$274.99
View Product
Part Number SSD/256G
Call to Order
$402.99
View Product
Part Number SSD/256GY
Call to Order
$402.99
View Product
Part Number 828EC9-3H
1333MHz 240pin CL9 ECC
In Stock
$412.99
View Product
Part Number SSD/128GH
Call to Order
$424.99
View Product
Part Number SSD/128GYH
Call to Order
$424.99
View Product
Part Number SSD/256GH
Call to Order
$649.99
View Product
Part Number SSD/256GYH
Call to Order
$649.99
View Product
Part Number SSD/512G
Call to Order
$929.99
View Product
Part Number SSD/512GH
Call to Order
$1499.99
View Product
Part Number 828ERDTC9-3
1333MHz 240pin CL9 Registered Dual Rank Thermal Sensor ECC
In Stock
$106.99
View Product
Part Number 828ERTC9-3
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$106.99
View Product
Part Number 828ERDTC9-3H
1333MHz 240pin CL9 Registered Dual Rank Thermal Sensor ECC
In Stock
$172.99
View Product
Part Number 828ERTC9-3H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$172.99
View Product
Part Number 828EC9-3
1333MHz 240pin CL9 ECC
In Stock
$255.99
View Product
Part Number 828EC9-3H
1333MHz 240pin CL9 ECC
In Stock
$412.99
View Product
Part Number 828ERTC9-2
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$71.99
View Product
Part Number 828ERTC9-2H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$114.99
View Product
Part Number 828EC9-2
1333MHz 240pin CL9 ECC
In Stock
$170.99
View Product
Part Number 828EC9-2H
1333MHz 240pin CL9 ECC
In Stock
$274.99
View Product
Part Number 824ERTC9-3
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$92.99
View Product
Part Number 824EC9-3
1333MHz 240pin CL9 ECC
In Stock
$139.99
View Product
Part Number 824ERTC9-3H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$149.99
View Product
Part Number 824EC9-3H
1333MHz 240pin CL9 ECC
In Stock
$224.99
View Product
Part Number 828ERTC9
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$35.99
View Product
Part Number 828ERTC9H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$57.99
View Product
Part Number 824ERTC9-2
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$61.99
View Product
Part Number 828EC9
1333MHz 240pin CL9 ECC
In Stock
$85.99
View Product
Part Number 824EC9-2
1333MHz 240pin CL9 ECC
In Stock
$92.99
View Product
Part Number 824ERTC9-2H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$99.99
View Product
Part Number 828EC9H
1333MHz 240pin CL9 ECC
In Stock
$137.99
View Product
Part Number 824EC9-2H
1333MHz 240pin CL9 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 822EC9-2
1333MHz 240pin CL9 ECC
In Stock
$52.99
View Product
Part Number 824EC9H
1333MHz 240pin CL9 ECC
In Stock
$74.99
View Product
Part Number 822ERTC9-2
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$80.99
View Product
Part Number 822EC9-2H
1333MHz 240pin CL9 ECC
In Stock
$84.99
View Product
Part Number 822ERTC9-2H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$129.99
View Product
Part Number 822EC9
1333MHz 240pin CL9 ECC
In Stock
$26.99
View Product
Part Number 821EC9-2
1333MHz 240pin CL9 ECC
In Stock
$37.99
View Product
Part Number 821ERTC9-2
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$37.99
View Product
Part Number 822ERTC9
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$40.99
View Product
Part Number 822EC9H
1333MHz 240pin CL9 ECC
In Stock
$42.99
View Product
Part Number 821EC9-2H
1333MHz 240pin CL9 ECC
In Stock
$59.99
View Product
Part Number 821ERTC9-2H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$59.99
View Product
Part Number 822ERTC9H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$64.99
View Product
Part Number 821EC9
1333MHz 240pin CL9 ECC
In Stock
$18.99
View Product
Part Number 821ERTC9
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$18.99
View Product
Part Number 821EC9H
1333MHz 240pin CL9 ECC
In Stock
$29.99
View Product
Part Number 821ERTC9H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
In Stock
$29.99
View Product
Part Number 82.5EC9
1333MHz 240pin CL9 ECC
In Stock
$18.99
View Product
Part Number 82.5ERTC9
1333MHz 240pin CL9 Registered Thermal Sensor ECC
Call to Order
$18.99
View Product
Part Number 82.5EC9H
1333MHz 240pin CL9 ECC
In Stock
$29.99
View Product
Part Number 82.5ERTC9H
1333MHz 240pin CL9 Registered Thermal Sensor ECC
Call to Order
$29.99
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
KTL-TS313/2G 2GB DDR3 PC3-10600 1333MHz ECC REG Thermal Sensor DIMM Kingston 822ERTC9
KTL-TS313/4G 4GB DDR3 PC3-10600 1333MHz ECC REG Thermal Sensor DIMM Kingston 824ERTC9
KTL-TS313/8G 8GB DDR3 PC3-10600 1333MHz ECC REG Thermal Sensor DIMM Kingston 828ERTC9
KTL-TS313E/2G 2GB DDR3 PC3-10600 1333MHz ECC DIMM Kingston 822EC9
KTL-TS313E/4G 4GB DDR3 PC3-10600 1333MHz ECC DIMM Kingston 824EC9
SNA-BR/35 2.5 to 3.5in Brackets and Screws Kingston
SNM225-S2/80GB 80GB Solid State Drive Kingston SSD/80G
SNM225-S2B/80GB 80GB Kit of 2 40GB Solid State Drive Kingston SSD/40G-2
SNV125-S2/30GB 30GB Solid State Drive Kingston SSD/30G
SNV425-S2/128GB 128GB Solid State Drive Kingston SSD/128G
SNVP325-S2/64GB 64GB Solid State Drive Kingston SSD/64G
SNVP325-S2/256GB 256GB Solid State Drive Kingston SSD/256G
SNVP325-S2B/64GB 64GB Kit of 2 32GB Solid State Drive Kingston SSD/32G-2
SNVP325-S2B/128GB 128GB Kit of 2 64GB Solid State Drive Kingston SSD/64G-2
SNVP325-S2B/256GB 256GB Kit of 2 128GB Solid State Drive Kingston SSD/128G-2
SVP100ES2/64G 64GB Solid State Drive AES Encryption Kingston SSD/64GY
SVP100ES2/128G 128GB Solid State Drive AES Encryption Kingston SSD/128GY
SVP100ES2/256G 256GB Solid State Drive AES Encryption Kingston SSD/256GY
SVP100S2/96G 96GB Solid State Drive Kingston SSD/96G
SVP100S2/512G 512GB Solid State Drive Kingston SSD/512G
SVP100S2B/96G 96GB Kit of 2 48GB Solid State Drive Kingston SSD/48G-2
SVP100S2B/512G 512GB Kit of 2 256GB Solid State Drive Kingston SSD/256G-2
CT1934483 24GB Kit of 3 8GB DDR3 PC3-10600 1333MHz ECC REG Dual Rank Thermal Sensor DIMM Crucial 828ERDTC9-3