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RamCity guarantees 100% that all modules below are compatible with the Dell Optiplex GX620 Small Form Factor / Desktop / Mini-Tower

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

Buy new: $90.99 $70.99

Part #. KTD-DM8400A/1G • DDR2-533 / PC2-4200 • 1.8V • more info

Buy new: $100.99 $78.99

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

Buy new: $90.99 $70.99

Part #. KTD-DM8400B/1G • DDR2-667 / PC2-5300 • 1.8V • more info

Buy new: $98.99 $76.99

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:

MODULES MUST BE ORDERED AND INSTALLED IN PAIRS for Dual Channel Mode.
Due to chipset limitations, DDR2-667 memory is restricted to operate at 533MHz in this system.
This system is configurable and can ship with either DDR2-533 (KTD-DM8400A/xx) or DDR2-667 (KTD-DM8400B/xx) memory.
These are compatible and can be mixed, however they will default to slowest clock speed populated.
If 4GB is installed, the recognized memory may be reduced to 3.5GB or less (depending on system configuration and memory allocation)

Standard Memory:

Maximum Memory:

Expansion:

CPU/Chipset:

Bus Architecture:

Upgrade Path:

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