Mac Pro has a 6-channel memory controller that supports 12 memory slots you can use to install up to 1.5TB of memory using 2933MHz DDR4 ECC compliant memory DIMMs. To ensure compatibility, Apple recommends that you use Apple-approved memory. You can purchase Apple-approved memory online from the Apple Store or by visiting an Apple Retail Store or Apple Authorized Reseller.

Memory requirements

Add RAM to your Apple MacBook Pro with a memory upgrade. Applies to models from 2006 to 2012 with RAM up to 16 GB. Order and upgrade your MacBook Pro today! 64GB (8x8GB) DDR2 PC2-5300F 667 MHz Memory RAM for Apple Mac Pro Tower 2008 Model 3,1 Upgrade Kit Fully Buffered FB DIMMs 5.0 out of 5 stars 1 OWC 16GB (2x8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit for iMac, Mac Mini, and MacBook Pro, (OWC1600DDR3S16P).

When you upgrade the memory in your Mac Pro, it must meet these requirements: 32 or 64 bit mac.

Memory Ram 4 Apple Mac Pro 2006 2008 1.1 3.1 DDR2 667 PC2-5300F FB 1,2x Lot UK. 32GB (4X 8GB) DDR3-1333 PC3-10600 Memory RAM for APPLE MAC PRO 5,1 Westmere. 96GB (6x16GB) DDR3 -1333 ECC Reg Memory for Apple Mac Pro Mid 2010 5,1 12 Core.

2933MHz DDR4 full-length DIMM. Mixing memory speeds is not recommended.
Error-correcting code (ECC)
8GB, 16GB, 32GB, 64GB, or 128GB DIMMs
Registered (R-DIMM) or Load-Reduced DIMM (LR-DIMM). Do not mix R-DIMMs and LR-DIMMs.
288-pin
Use the same size memory modules across all slots to maximize performance.
DIMMs with heatsinks are not supported and may damage the DIMM mechanism.

The Mac Pro supports both R-DIMMs and LR-DIMMs, but you can't mix these two memory types. Mixing R-DIMMs and LR-DIMMs will result in a memory error flash of the status indicator light when you turn on your computer.

Model specifications

Best Ram For Mac Pro

Mac Pro model	Max RAM	Speed	Type
8-core	768GB	2666MHz DDR4 ECC	LR-DIMM or R-DIMM
12-core	768GB	2933MHz DDR4 ECC	LR-DIMM or R-DIMM
16-core	768GB	2933MHz DDR4 ECC	LR-DIMM or R-DIMM
24-core	1.5TB	2933MHz DDR4 ECC	LR-DIMM or R-DIMM
28-core	1.5TB	2933MHz DDR4 ECC	LR-DIMM or R-DIMM

Ram For Mac Pro

Configured from Apple, Mac Pro models include the following DIMM types:

R-DIMMs for configurations up to 192GB (6x32GB).
LR-DIMMs for configurations of 384GB (6x64GB) or more.

All memory included with your Mac Pro is 2933MHz. Mac Pro models with 8 core processors operate memory at 2666MHz.

Learn more

You indeed have the first generation Mac Pro. It can use up to 8 - 240-pin PC2-5300 (667MHz) DDR2 ECC fully-buffered DIMM (FB-DIMM) in (matched pairs.) The modules should have an Apple certified or similar heat sink. Do not use DIMMs without heat sinks as they will not last and may be subject to frequent errors. The DIMMs must be fully buffered (FB) and must be error correcting (ECC) and installed in matching pairs.
Whatever your local dealer sold you if there's no heat sink, they aren't FB and ECC modules, then don't use them.
For proper installation see the following:
About RAM installation in the Mac Pro
Mac Pro memory arrangement photos
Mac Pro Memory Configuration
Memory Tests- '2008' Mac Pro
Ram should be installed minimally in matched pairs and optimally in matched quads. This means the memory modules are the same size and specifications. They should also be equipped with the Apple-certified style of heat sink.

Memory Ram For Mac Pro 2009

Radium 49 drivers for mac. Jul 3, 2010 4:06 PM