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Motherboard RAM: 0mb
Sockets: 4-8
RAM type: DDR2-667. DDR2-800, or DDR3-1066
Overview: The Mac Pro has 4 or 8 memory slots. Please check your Apple System Profiler to find which version you have. The Mac Pro also comes in three versions, which run 667Mhz, 800Mhz or 1066Mhz memory.
What type of RAM do you need? 
DDR3-1066 Issues: The DDR3-1066 DIMMs for the Mac Pro require an EPROM Thermal Sensor for full performance and compatibility. Many 3rd party Mac Pro DIMMs not include this sensor. However, Ramjet memory always conforms 100% to the Apple spec, and these DIMMs do include the thermal EPROM.
The DDR3-1066 DIMMs for the Mac Pro will run 5-10% faster if they are installed in matched sets of three (tri-channel). You may add DIMMs in any combination, but perforance will suffer slightly if the DIMMs are not matched 3x at a time.
When installing 4GB DDR3-1066 DIMMs into your Mac Pro, ALL installed memory must be the same matching 4GB part.
 Heat Sinks for 667Mhz and 800Mhz FB-DIMMs: We use the only heat sink that is certified by Apple for use in the Mac Pro. Other brands use heat sink types that cause overheating leading to increased fan usage and slower performance. Our heat sink runs 7 degrees cooler than the folded plate design, and 15 degrees cooler than the flat spreader design of heat sink.
Matched Modules: Ramjet kits contain a matched set of DIMMs. The kit will consist of identical brand/model/spec IC's, with matching batch numbers. Our memory will also mate perfectly with Apple original DIMMs.
Trade-In Rebate: Your Apple original memory can be returned to Ramjet for a trade-in rebate. Please check our Rebate Page for details.
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