I start up my Mac Pro in Verbose mode. At startup, it discovers my 2009 Mac Pro with single processor chip (nominally four cores) has eight processors. It appears to see each core capable of HyperThreading (each core can run two threads), and puts them to work right away. This is an additional argument against going for the 8-core or 12-core.

Find great deals on eBay for mac pro processor. Shop with confidence. The 3,1 single-processor Mac Pro can be upgraded to dual-processor by adding a second CPU and appropriate heat sink. The CPUs must match including sSpec, so either get a second CPU that matches your existing CPU, or get two matching CPUs.

If you really effectively have twice as many cores as reported, you will be better off buying an additional Mac rather than committing 24 core-equivalents to Photoshop [which currently cannot find enough work for a lot of cores.]. Apple Footer • This site contains user submitted content, comments and opinions and is for informational purposes only. Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Apple can therefore provide no guarantee as to the efficacy of any proposed solutions on the community forums.

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The determines the maximum amount of memory that can be installed in a Mac as validated by a series of comprehensive, in-house laboratory tests. While OWC “MaxRAM” configurations exceed Apple’s officially supported maximums, all OWC brand memory upgrades are assured to perform flawlessly and are covered by a Lifetime Advance Replacement Warranty and Money Back Guarantee. Recently added to our growing list of machines are the 2010 Mac Pro dual processor (8-Core and 12-Core) systems. Whereas Apple lists the supported memory as “eight memory slots (four per processor) supporting up to 32GB of main memory using 1GB, 2GB, or 4GB DIMMs,” OWC has confirmed that our 8GB memory modules perform to their fullest capacity allowing us to support 8GB DIMMs for up to 64GB of memory in your 8-Core or 12-Core Mid 2010 Mac Pro. Stay tuned to the OWC blog for further information including benchmark results. I just bought a 2010 hexacore Mac Pro. My previous 8 core Mac Pro had 24 GB of RAM, but at the time I can only afford to put in 16 GB in the hexacore machine.

After receiving the machine and installing the 16 GB the machine runs great, but seems slower than it seems it should (it is a 3.33 GHz hexacore). With barely anything running (under Lion), the machine only has 8.3 GB of free memory.

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I’m thinking I might be able to swing 24 GB (3 x 8) with another 8 sometime in the near future. How much performance gain should I expect to get. I use Photoshop and a lot of other photo rendering programs.