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Current version by: mayer ,

Text:

The top one is riser A. Mixing RAM from different vendors will cause failure.
The top one is riser A. Mixing RAM from different vendors will cause failure.
 
The Mac Pro has two memory riser cards with a total of eight 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
 
FB-DIMMs in two of the DIMM slots. Additional DIMMs can be installed in
 
the open DIMM slots.
 
DIMMs must be installed in equal-sized pairs from the same vendor and fit
 
these specifications:
 
 667 MHz FB-DIMMS
 
 72-bit–wide 240-pin modules
 
 Maximum 36 devices per DIMM
 
 Error-correcting code (ECC)
 
NOTE  When purchasing DIMMs for use in Mac computers, make sure
 
that the memory vendor conforms to the Joint Electron Device Engineering
 
Council (JEDEC) specification. Check with the memory vendor to ensure
 
that the DIMMs support the correct timing modes and that the Serial
 
Presence Detect (SPD) feature has been programmed properly, as described
 
in the JEDEC specification.

Status:

open

Original post by: mayer ,

Text:

The top one is riser A.

The Mac Pro has two memory riser cards with a total of eight 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

FB-DIMMs in two of the DIMM slots. Additional DIMMs can be installed in

the open DIMM slots.

DIMMs must be installed in equal-sized pairs from the same vendor and fit

these specifications:

 667 MHz FB-DIMMS

 72-bit–wide 240-pin modules

 Maximum 36 devices per DIMM

 Error-correcting code (ECC)

NOTE  When purchasing DIMMs for use in Mac computers, make sure

that the memory vendor conforms to the Joint Electron Device Engineering

Council (JEDEC) specification. Check with the memory vendor to ensure

that the DIMMs support the correct timing modes and that the Serial

Presence Detect (SPD) feature has been programmed properly, as described

in the JEDEC specification.

Status:

open