User Guide
Mac Pro Troubleshooting — General Information 140
General Information
Memory
The Mac Pro computer has two memory cards with a total of 8 memory slots. On each card, the
slots are arranged as two banks of two slots each. The computer comes with a minimum of 1 GB
of memory, installed as a pair of 512 MB fully buered, dual inline memory modules (FB-DIMMs)
in two of the DIMM slots. Additional DIMMs can be installed in the open DIMM slots, as illustrated
below.
Note: DIMMs must be installed in pairs of equal size from the same vendor. In the following
illustration, DIMMs in one colored pair do not need to match DIMMs in a dierent colored pair.