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RamCity guarantees 100% that all modules below are compatible with the HP/Compaq Business Desktop dc7900 Ultra Slim Desktop

Part #. CQE • DDR2-800 / PC2-6400 • CL6 • 1.8V • 16-chip 256M x8 • more info

Buy new: $252.99 $197.99

Part #. BJE • DDR2-800 / PC2-6400 • CL6 • 1.8V • 16-chip 128M x8 • more info

Buy new: $107.99 $83.99

Part #. KTH-ZD8000C6/2G • DDR2-800 / PC2-6400 • 1.8V • more info

Buy new: $145.99 $113.99

Part #. KTH-ZD8000C6/1G • DDR2-800 / PC2-6400 • 1.8V • more info

Buy new: $94.99 $73.99

Part #. CBI • DDR2-800 / PC2-6400 • CL6 • 1.8V • 16-chip 64M x8 • more info

Buy new: $92.99 $72.99

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, if supported.
If 4GB is installed, the recognized memory may be reduced to 3.5GB or less (depending on system configuration and memory allocation).
Maximum configurations require a 64-bit operating system.

Standard Memory:

Maximum Memory:

Expansion:

CPU/Chipset:

Bus Architecture:

Mfr's System P/N's:

FS489AW; FS490AW; FS491AW; FS494AW; FU038ET; FU039ET; FU045ET; FU195EA; FU213EA; KP722AV; KP726AV; KR589UA; KR624UT; KR653UT; KR654UT; KR655UT; NA651EA; NA663ET; NA664ET; VC572ET

Upgrade Path:

Virtually any configuration up to 8GB can be reached using any combination of 1, 2, and 4GB modules.