#4444 1 GB DDR-1 Main Storage 520/550
#4444 - 1 GB DDR Main Storage (DDR1; 256 Mb technology, CCIN 309B) (ships four 256 MB DIMMs for a total of 1 GB)
Install DIMMs in sets of four (quads) with one exception: A single pair of 256 MB DIMMs is allowed on the #8950 processor. Add an additional pair of 256 MB DIMMs to the original pair (to make a quad) whenever more DIMMs are added. Then one additional quad of DIMMs can be added to the system. For the #8950 processor, the first DIMM pair goes into DIMM slots J0A and J2A. The second pair of DIMMs goes into slots J0C and J2C. The first quad of DIMMs is plugged into DIMM slots J0A, J2A, J0C, and J2C. The second quad of DIMMs is plugged into DIMM slots J0B, J2B, J0D, and J2D.