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There is much discussion about the best technique for applying termal paste, but I chose to spread a thin layer and it seems fine. Arctic Silver 5 comes highly recommended, but I couldn’t get it locally when I needed it, so I went for a similar silver-based paste from Best Buy. It doesn’t matter what thermal paste you use. You just need a long 3mm t-handle hex wrench, some thermal paste, and some 70%+ isopropyl alcohol and a dust-free cloth to clean the old thermal paste from the old CPU and the heatsink contact.
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The CPU tray pops out easily (and you need to take it out anyway to install the wifi/bluetooth card). For this machine, it was a piece of cake. But then I learned those problems were specific to later MacPros with two processors. Here is one very expensive upgrade-by-mail service. I was tempted to have it professionally installed. I read many reports about heatsink problems and needing to remove the CPU lids (or buy delidded CPUs) and install custom spacer washers, etc. Replacing the CPU on this single-processor MacPro was considerably easier than I feared it might be. In my case, I was waiting on the RAM shipment so I replaced the RAM later, which meant I had to reset the PRAM again afterwards. If you have your new RAM ready to go, it would be best to remove the old RAM, then replace the CPU, then install the new RAM. Replacing RAM is very simple. If you aren’t comfortable doing that, you probably won’t be comfortable doing any of the rest of this. Needless to say, you’ll want to disconnect all cables, work on a static-free cloth on a flat surface, and ground yourself by touching the metal case, before doing this surgery.
MacOS Sierra should now be available in the App Store. Also, if you’re currently on El Capitan, you will need to disable SIP (System Integrity Protection) before running the tool, then re-enable it afterwards. After successful flashing the firmware and before any hardware installations, and again after they are all completed, reset the PRAM.
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I found that the firmware update tool expects to download a firmware update file from Apple from a link that has moved, so you need also to download that EFI firmware update file and mount it on your desktop, where the tool will find it. When running that tool, I initially got an error. Indeed, flashing the firmware alone is enough to install Sierra, but performance may suffer. This is necessary to install MacOS Sierra and for the Mac to recognize the faster 1333mhz RAM (with a compatible CPU). I have yet to actually install Sierra, but it’s now ready to go.īefore I began hardware updates, I flashed the MacPro firmware from version 4,1 to version 5,1.
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There’s already an wealth of information out there on how to do all of this, but I wanted to share some important things I learned that may be helpful or not obvious. After adding 2 USB 3.0 hubs and a couple 6′ USB 3.0 cables, the total cost came to $817.
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I replaced the original CPU with a Xeon X5690 ($225 on ebay), the graphics card with a Radeon AMD 7950 3GB ($250 on ebay), the RAM with 32GB of 1333 mhz DDR3 RAM ($65 on ebay), the wifi and bluetooth with a custom solution from OSXWifi ($110), and added USB 3.0 support with a Sonnet Allegro PCIe card ($55 on Amazon). If you also have a MacPro, most of this is easier than you may think.Īfter considerable research, I succeeded in upgrading my Early 2009 Quad-Core MacPro so that it is virtually a new machine.
However, with a simple firmware update and/or some hardware updates, it’s entirely possible to breathe new life into your machine, hopefully for some years to come. Those of you with Macs earlier than Late 2009 have no doubt realized that MacOS Sierra cannot be officially installed on your computer.
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