Upgrade the memory in select 2009-2012 Mac Pro systems using the 64GB DDR3 1333 MHz UDIMM Memory Kit from OWC / Other World Computing. This memory kit features a total capacity of 64GB, which is made up of eight 8GB modules. It also has a clock speed of 1333 MHz, a bus speed of PC-10600, and a 240-pin UDIMM form factor. It operates using 1.5V, has a CAS Latency of 9-9-9-24, a component configuration of 1024M x 72, a module bandwidth of 10.6 GB/s, and is equipped with ECC technology. By offering ECC (Error Checking and Correcting) technology, this RAM will help your workstation encounter fewer errors that can corrupt data sets and introduce system issues. Additionally, this memory module is compatible with Apple Specified Thermal Sensor, which ensures that the RAM maintains a safe thermal operating range.
To utilize over 32GB of memory in your Mac Pro using 10.6.x or greater, you must boot into 64-bit mode. In 32-bit mode, all installed memory will show in the system profiler, but only up to 32GB will be actively used by the computer.
Laurie O’Reilly (verified owner) –
There are many different memory modules for different computers. This was exactly the right product and fit and worked perfectly. Not cheap, but very reasonable.
Bud Stanton (verified owner) –
i just install this memory upgrade in my 2009 Mac Pro dual processor Xeon 2.26 GHz Quad-Core ,, and it worked instantly. i run the memtest86 to make sure there’s no errors and pass it without any single problem,, one thing you will going to notice that it will run in 1066 MHz speed not the 1333 MHz, and that’s fine.. definitely recommended
Celestine Von (verified owner) –
After installing these, the indicator light over the power button on my Mac continuously blinked. Then I discovered, after rearranging them quite a few times, that I had installed each 95%. You must hear each one CLICK in position. If not, you will get the blinking indicator and think they are defective. It runs smoother and faster since the update.
Salvatore Friesen (verified owner) –
Works well
Dan Satterfield (verified owner) –
Put 4 of these in my Mid 2010 Mac Pro.Terrific upgrade from 8 gigs of memory. Faster for everything I do with the Mac, primarily video work.
Duane Schumm (verified owner) –
No compatability problems with the quad core 2012 Mac Pro. Plugged them in and worked without issue.
Esperanza Bauch (verified owner) –
great Mac memory, used to replace old failing memory. Love B and H as they offer great products and great service.
Easton Kunde (verified owner) –
Worked perfectly in my MacPro 5.1 I had to remove some other ram I had in my machine as it was not compatible. (watch out for the voltage of the Ram and if it registered)