The IBM/Lenovo ThinkCentre A52 8155, 8156, 8157-xxx uses DDR2 DIMM PC2-4200 533MHz, PC2-5300 667MHz 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 DDR2 DIMM PC2-4200 533MHz, PC2-5300 667MHz
Base Memory 256 MB (Removable) or 512 MB (Removable) or 1 GB (Removable)
Upgrade Slots 2 Sockets
Maximum Memory 4 GB
Maximum Module Size 2GB
CPU & Chipset Intel Pentium 4 Intel 945G Intel Celeron D Intel 945G Intel Pentium D Intel 945G
Bus Architecture PCI; PCI Express
Notes Systems come standard with either DDR2-533 (KTM3211) or DDR2-667 (KTM4982). When mixing the KTM3211 and the KTM4982, all installed memory will run at the DDR2-533 speed. MODULES MAY BE INSTALLED ONE AT A TIME; however, they must be added in like pairs to take advantage of dual channel mode.
Manufacturer Part Numbers
  • 8155-xxx
  • 8157-xxx
  • 8186-xxx
Part Number 52.2C7
533MHz 240pin CL7
In Stock
$4.99
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Part Number 53.2C7
667MHz 240pin CL7
In Stock
$4.99
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Part Number 53.5C7
667MHz 240pin CL7
In Stock
$5.99
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Part Number 52.5C7
533MHz 240pin CL7
In Stock
$6.99
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Part Number 52.2C7H
533MHz 240pin CL7
In Stock
$7.99
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Part Number 521C7
533MHz 240pin CL7
In Stock
$7.99
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Part Number 53.2C7H
667MHz 240pin CL7
In Stock
$7.99
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Part Number 531C7
667MHz 240pin CL7
In Stock
$7.99
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Part Number 53.5C7H
667MHz 240pin CL7
In Stock
$8.99
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Part Number 52.2C7-2
533MHz 240pin CL7
In Stock
$9.99
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Part Number 52.5C7H
533MHz 240pin CL7
In Stock
$9.99
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Part Number 53.2C7-2
667MHz 240pin CL7
In Stock
$9.99
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Part Number 53.5C7-2
667MHz 240pin CL7
In Stock
$10.99
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Part Number 52.5C7-2
533MHz 240pin CL7
In Stock
$12.99
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Part Number 521C7H
533MHz 240pin CL7
In Stock
$12.99
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Part Number 531C7H
667MHz 240pin CL7
In Stock
$12.99
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Part Number 52.2C7-2H
533MHz 240pin CL7
In Stock
$14.99
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Part Number 522C7
533MHz 240pin CL7
In Stock
$14.99
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Part Number 53.2C7-2H
667MHz 240pin CL7
In Stock
$14.99
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Part Number 521C7-2
533MHz 240pin CL7
In Stock
$15.99
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Part Number 531C7-2
667MHz 240pin CL7
In Stock
$15.99
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Part Number 532C7
667MHz 240pin CL7
In Stock
$15.99
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Part Number 53.5C7-2H
667MHz 240pin CL7
In Stock
$17.99
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Part Number 52.5C7-2H
533MHz 240pin CL7
In Stock
$19.99
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Part Number 522C7H
533MHz 240pin CL7
In Stock
$23.99
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Part Number 521C7-2H
533MHz 240pin CL7
In Stock
$24.99
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Part Number 531C7-2H
667MHz 240pin CL7
In Stock
$24.99
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Part Number 532C7H
667MHz 240pin CL7
In Stock
$24.99
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Part Number 522C7-2
533MHz 240pin CL7
In Stock
$29.99
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Part Number 532C7-2
667MHz 240pin CL7
In Stock
$30.99
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Part Number 522C7-2H
533MHz 240pin CL7
In Stock
$47.99
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Part Number 532C7-2H
667MHz 240pin CL7
In Stock
$49.99
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Part Number 522C7-2
533MHz 240pin CL7
In Stock
$29.99
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Part Number 532C7-2
667MHz 240pin CL7
In Stock
$30.99
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Part Number 522C7-2H
533MHz 240pin CL7
In Stock
$47.99
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Part Number 532C7-2H
667MHz 240pin CL7
In Stock
$49.99
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Part Number 522C7
533MHz 240pin CL7
In Stock
$14.99
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Part Number 521C7-2
533MHz 240pin CL7
In Stock
$15.99
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Part Number 531C7-2
667MHz 240pin CL7
In Stock
$15.99
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Part Number 532C7
667MHz 240pin CL7
In Stock
$15.99
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Part Number 522C7H
533MHz 240pin CL7
In Stock
$23.99
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Part Number 521C7-2H
533MHz 240pin CL7
In Stock
$24.99
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Part Number 531C7-2H
667MHz 240pin CL7
In Stock
$24.99
View Product
Part Number 532C7H
667MHz 240pin CL7
In Stock
$24.99
View Product
Part Number 521C7
533MHz 240pin CL7
In Stock
$7.99
View Product
Part Number 531C7
667MHz 240pin CL7
In Stock
$7.99
View Product
Part Number 53.5C7-2
667MHz 240pin CL7
In Stock
$10.99
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Part Number 52.5C7-2
533MHz 240pin CL7
In Stock
$12.99
View Product
Part Number 521C7H
533MHz 240pin CL7
In Stock
$12.99
View Product
Part Number 531C7H
667MHz 240pin CL7
In Stock
$12.99
View Product
Part Number 53.5C7-2H
667MHz 240pin CL7
In Stock
$17.99
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Part Number 52.5C7-2H
533MHz 240pin CL7
In Stock
$19.99
View Product
Part Number 53.5C7
667MHz 240pin CL7
In Stock
$5.99
View Product
Part Number 52.5C7
533MHz 240pin CL7
In Stock
$6.99
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Part Number 53.5C7H
667MHz 240pin CL7
In Stock
$8.99
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Part Number 52.2C7-2
533MHz 240pin CL7
In Stock
$9.99
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Part Number 52.5C7H
533MHz 240pin CL7
In Stock
$9.99
View Product
Part Number 53.2C7-2
667MHz 240pin CL7
In Stock
$9.99
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Part Number 52.2C7-2H
533MHz 240pin CL7
In Stock
$14.99
View Product
Part Number 53.2C7-2H
667MHz 240pin CL7
In Stock
$14.99
View Product
Part Number 52.2C7
533MHz 240pin CL7
In Stock
$4.99
View Product
Part Number 53.2C7
667MHz 240pin CL7
In Stock
$4.99
View Product
Part Number 52.2C7H
533MHz 240pin CL7
In Stock
$7.99
View Product
Part Number 53.2C7H
667MHz 240pin CL7
In Stock
$7.99
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
KTM3211/1G 1GB DDR2 PC2-4200 533MHz DIMM Kingston 521C7
KTM3211/2G 2GB DDR2 PC2-4200 533MHz DIMM Kingston 522C7
KTM4982/1G 1GB DDR2 PC2-5300 667MHz DIMM Kingston 531C7
KTM4982/2G 2GB DDR2 PC2-5300 667MHz DIMM Kingston 532C7