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48GB (8GBx6) DDR3 ECC 1066MHz Memory for Early 2009 to Mid 2010 Mac Pro 4.1 and 5.1 8-core DDR3-1066MHz

  • Tech Specs
  • Install Video
  • Shipping

Tech Specs

48GB DDR3 ECC 1066MHz SDRAM for Early 2009 to Mid 2010 Mac Pro Models 4.1 and 5.1 8-core only. Contains six (6) 8GB SDRAM memory modules that are specifically designed and SPD configured for the Nehelam and Westmere Mac Pro Models (3rd Generation).

These ECC DIMMs include the Apple Specified Thermal EPROM Sensor that are compatible with the latest Apple Firmware.


  • Total Capacity: 48GB (8GBx6)
  • Bus Speed: DDR3-1066MHz (PC3-8500)
  • Form Factor: ECC DIMM, Dual Rank, Unbuffered
  • No. of Pins: 240
  • Voltage: 1.5V
  • CAS Latency: 7-7-7-20
  • Cycle Time: 5ns
  • Bandwidth: 8.5GB/s
  • ROHS Certified

This is a sale item. No additional promotions or discounts apply.

Install Video


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.

MP-DDR3-1066 - 48GB (8GBx6) DDR3 ECC 1066MHz Memory For Early 2009 To Mid 2010 Mac Pro 4.1 And 5.1 8-core