The IBM/Lenovo ThinkStation S20 uses DDR3 DIMM ECC PC3-8500 1066MHz 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 DDR3 DIMM ECC PC3-8500 1066MHz
Base Memory
Upgrade Slots 6
Maximum Memory 24GB
Maximum Module Size 4GB
CPU & Chipset ~
Bus Architecture ~
Part Number 81.5EC9
1066MHz 240pin CL9 ECC
In Stock
$18.99
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Part Number 811EC9
1066MHz 240pin CL9 ECC
In Stock
$18.99
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Part Number 812EC9
1066MHz 240pin CL9 ECC
In Stock
$26.99
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Part Number 81.5EC9H
1066MHz 240pin CL9 ECC
In Stock
$29.99
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Part Number 811EC9H
1066MHz 240pin CL9 ECC
In Stock
$29.99
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Part Number 811EC9-2
1066MHz 240pin CL9 ECC
In Stock
$37.99
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Part Number 812EC9H
1066MHz 240pin CL9 ECC
In Stock
$42.99
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Part Number 814EC9
1066MHz 240pin CL9 ECC
In Stock
$46.99
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Part Number 812EC9-2
1066MHz 240pin CL9 ECC
In Stock
$52.99
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Part Number 811EC9-2H
1066MHz 240pin CL9 ECC
In Stock
$59.99
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Part Number 811EC9-4
1066MHz 240pin CL9 ECC
In Stock
$74.99
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Part Number 814EC9H
1066MHz 240pin CL9 ECC
In Stock
$74.99
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Part Number 812EC9-2H
1066MHz 240pin CL9 ECC
In Stock
$84.99
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Part Number 814EC9-2
1066MHz 240pin CL9 ECC
In Stock
$92.99
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Part Number 812EC9-4
1066MHz 240pin CL9 ECC
In Stock
$105.99
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Part Number 811EC9-4H
1066MHz 240pin CL9 ECC
In Stock
$119.99
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Part Number 814EC7-3
1066MHz 240pin CL7 ECC
In Stock
$139.99
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Part Number 814EC9-2H
1066MHz 240pin CL9 ECC
In Stock
$149.99
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Part Number 812EC9-4H
1066MHz 240pin CL9 ECC
In Stock
$169.99
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Part Number 814EC9-4
1066MHz 240pin CL9 ECC
In Stock
$185.99
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Part Number 814EC7-3H
1066MHz 240pin CL7 ECC
In Stock
$224.99
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Part Number 814EC9-4H
1066MHz 240pin CL9 ECC
In Stock
$299.99
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Part Number 814EC9-4
1066MHz 240pin CL9 ECC
In Stock
$185.99
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Part Number 814EC9-4H
1066MHz 240pin CL9 ECC
In Stock
$299.99
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Part Number 814EC7-3
1066MHz 240pin CL7 ECC
In Stock
$139.99
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Part Number 814EC7-3H
1066MHz 240pin CL7 ECC
In Stock
$224.99
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Part Number 814EC9-2
1066MHz 240pin CL9 ECC
In Stock
$92.99
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Part Number 812EC9-4
1066MHz 240pin CL9 ECC
In Stock
$105.99
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Part Number 814EC9-2H
1066MHz 240pin CL9 ECC
In Stock
$149.99
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Part Number 812EC9-4H
1066MHz 240pin CL9 ECC
In Stock
$169.99
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Part Number 814EC9
1066MHz 240pin CL9 ECC
In Stock
$46.99
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Part Number 812EC9-2
1066MHz 240pin CL9 ECC
In Stock
$52.99
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Part Number 811EC9-4
1066MHz 240pin CL9 ECC
In Stock
$74.99
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Part Number 814EC9H
1066MHz 240pin CL9 ECC
In Stock
$74.99
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Part Number 812EC9-2H
1066MHz 240pin CL9 ECC
In Stock
$84.99
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Part Number 811EC9-4H
1066MHz 240pin CL9 ECC
In Stock
$119.99
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Part Number 812EC9
1066MHz 240pin CL9 ECC
In Stock
$26.99
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Part Number 811EC9-2
1066MHz 240pin CL9 ECC
In Stock
$37.99
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Part Number 812EC9H
1066MHz 240pin CL9 ECC
In Stock
$42.99
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Part Number 811EC9-2H
1066MHz 240pin CL9 ECC
In Stock
$59.99
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Part Number 811EC9
1066MHz 240pin CL9 ECC
In Stock
$18.99
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Part Number 811EC9H
1066MHz 240pin CL9 ECC
In Stock
$29.99
View Product
Part Number 81.5EC9
1066MHz 240pin CL9 ECC
In Stock
$18.99
View Product
Part Number 81.5EC9H
1066MHz 240pin CL9 ECC
In Stock
$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
CT1471213 12GB Kit of 3 4GB DDR3 PC3-8500 1066MHz ECC DIMM Crucial 814EC7-3