Apple Mac Pro - Page 23

Mac Pro (Mid 2010) General Troubleshooting — Memory Conguration 23
2010-08-31
Dual-Processor Conguration
An 8-core or 12-core Mac Pro (Mid 2010) has one processor and eight memory slots. You can
install 1 GB, 2 GB, or 4 GB DIMMs for a total of up to 32 GB of memory.
You can install dierent size DIMMs in Mac Pro (Mid 2010). However, for best performance,
Apple recommends you install equal-size DIMMs (all 1 GB, all 2 GB, or all 4 GB) lling the slots in
the order listed in this table. Note that you cannot place a DIMM in slot 4, without rst placing a
DIMM in slot 3; you also cannot place a DIMM in slot 8 without a DIMM in slot 7.
If you have Fill in these slots
Two DIMMs 1 and 2
Three DIMMs 1, 2, and 3
Four DIMMs 1, 2, and 5, 6
Six DIMMs 1, 2, 3 and 5, 6, 7
Eight DIMMs 1, 2, 3, 4 and 5, 6, 7, 8
See also “Memory Slot Utility” below.
Memory Slot Utility
If you install dierent-size DIMMs in single-processor or dual-processor Mac Pro (Mid 2010)
computers, follow the order in the tables above. If the DIMM conguration you install doesn’t
provide optimized performance, the Memory Slot Utility appears on screen and recommends
an improved conguration.
To use the Memory Slot Utility again, go to /System/Library/Core Services.