Upgrade the memory in select 2009-2010 Mac Pro systems using the OWC 16GB DDR3 1066MHz DIMM Memory Modulefrom OWC / Other World Computing. This single memory module features a capacity of 16GB, a clock speed of 1066 MHz, a bus speed of PC-8500, and a 240-pin DIMM form factor. It operates using 1.5V, has timings of 7-7-7-20, a component configuration of 2048M x 72, a module bandwidth of 8.5 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 equipped with an Apple specified thermal sensor, which ensures that the RAM maintains a safe thermal operating range.

OWC p/n OWC1333D3MPE8GB (8GB modules) and OWC1333D3MPE16G (16GB modules) require that all installed modules be of the same p/n OWC 8GB and/or 16GB modules. Other existing Apple or 3rd party 1GB, 2GB, and 4GB modules are not supported for use with this module and need to be removed when this module is added.

16GB Capacity    1066 MHz Clock Speed    PC3-8500    240-Pin DIMM    1.5V    7-7-7-20 Timings    ECC    Apple Specified Thermal Sensor    Compatible with Select Mac Pros    RoHS Certified

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: Xserve3,1
Quad-Core: 2.26 GHz
Eight-Core: 2.26 GHz, 2.66 GHz, 2.93 GHz

Compatible with certain Intel / AMD Process based desktops and servers capable of the specifications listed above. Memory complies with JEDEC Specifications, document JESD79-3B

Related Questions and Answers

Q: 1. can I install this on imac 27in late 2009?

A: sorry it is everymac dot com

Q: 2. Why is this product/package prized so high or so differently? Say, with other OCW 32GB package? I'm talking about the OWC / Other World Computing 32GB DDR3 1867 MHz SO-DIMM Memory Kit (2 x 16GB, Late 2015 iMac Retina 5K) which is prized at $508, while the other package is just around $200.

A: What is the item code for the other 32GB kit that you are comparing this one to?

Q: 3. is 4GB DDR3-1333 PC10600 compatible to hp G62-225dx?

A: No. My documentation shows that your system uses PC2 5300 RAM. The proper 4GB chip for your system can be found here: a href= http://bhpho.to/1sUNFxZ target= _blank http://bhpho.to/1sUNFxZ/a

Q: 4. Will this RAM (32GB) work on the 5K iMac Late 2015?

A: Yes, this is for the iMac w/Retina 5K display (27 inch Late 2015)Model ID: iMac 17,1

Q: 5. I can use late 2015 4k imac

A: yes

Q: 6. Hi, can this memory work in a Acer Aspire 5740-5749? (windows).The specification say memory for mac..

A: We specifically build our memory for Mac's, but most of the time it does work on PC's. The memory complies with JEDEC specifications, but there are far too many variables involved to tell you for certain.

Q: 7. This memory caused my iMac hash mismatch issues, I bought in 2023, what's the warranty information?

A: OWC offers a lifetime warranty with the OWC 16GB DDR4 2400 MHz SO-DIMM Memory Module.

Q: 8. Can this be used to upgrade the memory on an 5k imac late 2015?

A: I couldn't get the OWC 16GB DIMMs to work reliably in a 64GB (4x16G) nor in a 32GB (2x16G) configuration in my late 2015 5k 27 iMac 17,1, so I had to return them -- system would panic and reboot in less than a minute while running BMD Disk Speed test. After reverting back to Apple-supplied 2x4GB configuration, everything was stable again. Next I'm trying a 4x8GB config using Crucial (Micron) DIMMs, which are also much less expensive.

Q: 9. Hello, Is this compatible with the i7 operating system? or just i5? Thanks!

A: Been blazing away in my i7 2015 model iMac for months now. I actually installed four of the 16GB cards to end up with 64GB (which the system is capable of handling right out of the box) of speedy RAM. If you go with these cards, you'll be pleased.

Q: 10. Can this memory work in an acer aspire7741 ? (windows)

A: It appears that your Aspire requires 1600MHz memory, this would not be appropriate.You would need OWC1600DDR3S08S.