Upgrade the memory in select 2009-2012 Mac Pro systems using the OWC 32GB DDR3 1333MHz UDIMM Kit for Mac Pro 2009-2012from OWC / Other World Computing. This memory kit features a total capacity of 32GB, which is made up of four 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.

32GB (4 x 8GB) Capacity    1333 MHz Clock Speed    PC-10600    240-pin UDIMM    1.5V    CAS Latency 9-9-9-24    ECC    Apple Thermal Sensor Compatible    Module Bandwidth: 10.6 GB/s    Compatible with the Select Mac Pros

Model ID: MacPro4,1

Quad-Core: 2.66 GHz, 2.93 GHz, 3.33 GHz

Eight-Core: 2.26 GHz, 2.66 GHz, 2.93 GHz

Model ID: MacPro5,1

Quad-Core: 2.8 GHz, 3.2 GHz, 3.33 GHz

Eight-Core: 2.4 GHz

Model ID: MacPro5,1

Six-Core: 3.33 GHz

Twelve-Core: 2.40 GHz, 2.66 GHz, 2.93 GHz, 3.06 GHz

Compatible with Intel / AMD Process based PCs capable with the specifications listed above. Memory complies with JEDEC Specifications, document JESD79-3B

Related Questions and Answers

Q: 1. Do these have heat spreaders attached?

A: The RAM chips in this kit have heat sinks attached to them.

Q: 2. it fits in IMAC 11.1 later 2009 ddr 1333 ?

A: I bought for my Macbook Pro early 2011 model # 8.1. Going from 8gb to 16gb improved performance even more than I expected. I cannot vouch for compatibility for any other model of Macbook Pro.

Q: 3. Can I use those OWC in addition to my Mac Pros (12 core mid 2012) original Hynix modules?

A: I can tell you that those dimm work fine in your mac, but I don' t know if you can mix with others . In fact I had incompatibility problems with other dimm ( not The original).

Q: 4. Does this work for a mid 2011 27 iMac 3.1Ghz Intel Core i5?

A: No, this should be the correct memory for a 27 Mid-2011 (iMac 12,2).a href= https://www.bhphotovideo.com/c/product/1212947-REG/owc_other_world_computing_owc1333ddr3s32s_32gb_4_x_8gb.html target= _blank https://www.bhphotovideo.com/c/product/1212947-REG/owc_other_world_computing_owc1333ddr3s32s_32gb_4_x_8gb.html/a

Q: 5. dose it work with the hp 2000-2d19wn?

A: No, it is not the correct memory, it is too slow.

Q: 6. This is not an ECC type, but will it work on MacPro late 2013?

A: This memory is ECC memory and is made for the 2013 Mac Pro, but it is Registered memory which cannot be mixed with non-Registered modules.

Q: 7. Will this RAM work on my Mac Pro (early 2009) 2x2.6GHz Quad-Core Intel Xenon?

A: Yes it certainly will. I have a new Mac Pro but the old version (early 2009) is still working with this memory upgrade.

Q: 8. will these work in a Mac Pro mid-2012 5.1 6-core machine?

A: If your Mid 2012 Mac Pro shipped with 1333Hz RAM it will be fully compatible with the computer. Note that some Mid 2012 models shipped with 1066MHz RAM. You can verify which your system uses by opening the System Information application in the Utilities folder.

Q: 9. Can I install this in my MacBook Pro Mid 2010?Processor: 2.4 GHz Intel Core 2 DuoMemory: 4 GB 1067 MHz DDR3Graphics: NVIDIA GeForce 320M 256 MB

A: This kit is for an iMac with 4 memory slots. I would need to know the computer's serial number to point you to the correct memory modules.

Q: 10. Are these actually UDIMM? OWC's website shows them as Registered (aka RDIMM)

A: These are RDIMM's.