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RamCity guarantees 100% that all modules below are compatible with the IBM/Lenovo ThinkCentre M55e 9642, 9644, 9645-xxx

RamCity 2GB CL4 240-pin DIMM

Part #. AMF • DDR2-533 / PC2-4200 • CL4 • 1.8V • 16-chip 128x8 • more info

Buy new: $107.99 $83.99

5 in Stock Free Shipping Guaranteed Compatible

RamCity 2GB CL5 240-pin DIMM

Part #. APM • DDR2-667 / PC2-5300 • CL5 • 1.8V • 16-chip 128x8 • more info

Buy new: $114.99 $89.99

26 in Stock Free Shipping Guaranteed Compatible

Kingston 2GB 240-pin DIMM

Part #. KTM4982/2G • DDR2-667 / PC2-5300 • 1.8V • more info

Buy new: $144.99 $112.99

13 in Stock Free Shipping Guaranteed Compatible

Kingston 2GB 240-pin DIMM

Part #. KTM3211/2G • DDR2-533 / PC2-4200 • 1.8V • more info

Buy new: $135.99 $105.99

1 in Stock Free Shipping Guaranteed Compatible

RamCity 1GB CL4 240-pin DIMM

Part #. ADA • DDR2-533 / PC2-4200 • CL4 • Dual Rank • 1.8V • 16-chip 64x8 • more info

Buy new: $90.99 $70.99

10 in Stock Free Shipping Guaranteed Compatible

Kingston 1GB 240-pin DIMM

Part #. KTM4982/1G • DDR2-667 / PC2-5300 • 1.8V • more info

Buy new: $99.99 $77.99

14 in Stock Free Shipping Guaranteed Compatible

Kingston 1GB 240-pin DIMM

Part #. KTM3211/1G • DDR2-533 / PC2-4200 • 1.8V • more info

Buy new: $110.99 $86.99

5 in Stock Free Shipping Guaranteed Compatible

RamCity 1GB CL5 240-pin DIMM

Part #. AFB • DDR2-667 / PC2-5300 • CL5 • 1.8V • 16-chip 64x8 • more info

Buy new: $90.99 $70.99

11 in Stock Free Shipping Guaranteed Compatible

We guarantee your memory upgrade will be 100% compatible, or return it within 1 Whole Year for a full refund.

Need some help installing your upgrade? See our guides and videos.

System Specifications

Comments:

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.

Standard Memory:

256MB (Removable) or
512MB (Removable) or
1GB (Removable)

Maximum Memory:

Expansion:

2 Sockets

CPU/Chipset:

Intel Pentium 4 Intel 946GZ
Intel Celeron D Intel 946GZ
Intel Pentium D Intel 946GZ
Intel Core 2 Duo Intel 945GZ

Bus Architecture:

PCI; PCI Express; SSD - SATA 2.5-inch

Mfr's System P/N's:

9642-xxx; 9644-xxx; 9645-xxx

Upgrade Path:

Virtually any configuration up to 4GB can be reached using any combination of 512MB, 1GB and 2GB modules.

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RamCity guarantees 100% that all modules below are compatible with the IBM/Lenovo ThinkCentre M55e 9642, 9644, 9645-xxx