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Mac Pro Memory for Models 4.1 and 5.1 (8-Core and 4-Core) DDR3-1066MHz

Ramjet.comMac Pro Memory for Models 4.1 and 5.1 (8-Core and 4-Core)
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Mac Pro Early 2009 and Mid 2010
8 slot and 4 slot versions

The DDR3-1066 DIMMs for the Mac Pro require a Thermal Sensor for full performance and compatibility. Many 3rd party Mac Pro DIMMs do not include this sensor. Ramjet memory always conforms 100% to the Apple spec, and these DIMMs include the Apple thermal sensor.

Tri-channel memory configuration gives a slight performance advantage. The DDR3-1066 DIMMs for the Mac Pro will run 1-3% faster if they are installed in matched sets of three (tri-channel). You may add DIMMs in any combination, but performance will suffer slightly if the DIMMs are not matched 3x at a time.

8GB and 16GB modules: In order for the Model ID 4,1 to recognize and utilize 8GB or 16GB modules, your OS must be upgraded to Lion or above.  Utilization of 16GBx8 memory modules requires OS X Mavericks (10.9.X.)  Previous operating systems are limited to a maximum of 96GB (16GBx6.)

Non-Mixable 16GB DIMMs: 16GB DIMMs can ONLY be used with identical 16GB DIMMs from the same batch (i.e. ordered at the same time.)

Matched Modules: The Ramjet kits for the Mac Pro DDR3-1066 contain a matched set of DIMMs. The kit will consist of identical brand/model/spec IC's. They will be from a single batch, and will have matching series numbers. This ensures maximum performance, and perfect compatibility.



Domestic Shipping Options Delivery Estimate
US Postal Service 1st Class* FREE 3-10 business days
US Postal Service Priority Mail $6.99 2-4 business days
UPS Ground $9.99 3-5 business days
UPS 2-Day $12.99 and up 2 business days
UPS Overnight $29.99 and up 1 business day
International Shipping Options Delivery Estimate
UPS Worldwide Expedited Price varies 2-5 business days**
UPS Worldwide Saver Price varies 1-3 business days**

Ramjet offers same day shipping for UPS Overnight and UPS 2-day air orders for in-stock items that are received by 3pm Central time Monday through Friday (Holidays excluded.) UPS costs are calculated based on promixity and package weight.

* Shipping weights above .8 lbs (13 ounces) can not use US Postal Service 1st Class.

** International shipping charges include all brokerage fees, but do not include taxes or duties assessed by your local government. International delivery estimates do not include any customs inspection delays.

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