Are we talking as a boot drive? PCIe SSDs on older hardware tend not be bootable and only work as storage devices once the OS is loaded. You can't take advantage of the speed of NVMe, so most PCIe based solutions will only be marginally faster then SATA 3.

I would consider it to be no danger at all to install a SATA 3 SSD into a 2009 Mac. You might not have a SATA III(~550MB/s) controller, but that would just mean running at SATA II speeds (~200MB/s) or about twice as fast as a mechanical hard drive doing sequential data. Another option would be to install a SATA III controller card.

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What you’ll need to install a graphics card into a Mac Pro 5,1. GutsParker Dual 6-Pin Female to 8-Pin Male Cable Black; 2 of Mini 6 Pin to 6 Pin PCI Express Video Card Power Adapter Cable; Once you have these two items you’re ready to go. Installing a Metal compatible card into a Mac Pro 5,1. Power down the Mac Pro and release the side.

But then you are back to just getting a PCIe to M.2 adapter. Straight PCIe drives do tend to be expensive and are more for enterprise tasks. Are we talking as a boot drive? PCIe SSDs on older hardware tend not be bootable and only work as storage devices once the OS is loaded. You can't take advantage of the speed of NVMe, so most PCIe based solutions will only be marginally faster then SATA 3.

I would consider it to be no danger at all to install a SATA 3 SSD into a 2009 Mac. You might not have a SATA III(~550MB/s) controller, but that would just mean running at SATA II speeds (~200MB/s) or about twice as fast as a mechanical hard drive doing sequential data. Another option would be to install a SATA III controller card. But then you are back to just getting a PCIe to M.2 adapter. Straight PCIe drives do tend to be expensive and are more for enterprise tasks.

Thanks for the speedy reply. Yes a boot drive.

Pcie video cards for mac pro 2017

Here's what I saw Here is my SATA info Intel ICH10 AHCI: Vendor: Intel Product: ICH10 AHCI Link Speed: 3 Gigabit Negotiated Link Speed: 1.5 Gigabit Physical Interconnect: SATA Description: AHCI Version 1.20 Supported. Deskstop player for mac google play. Well the external eSATA ports are certainly interesting, and they are at SATA III speeds. Fairly slow for a PCIe SSD though. Even in 2008/2009 you could get OCZ revo drives that broke 1000MB/s. Late model NVMe drives are pushing 2000MB/s through PCIe 3.0/PCIe M.2 slots. Your internal controller only supports up to SATA II, so a SATA SSD upgrade wouldn't be that impressive.

They do list boot support, so it would give some pep to your aging machine. Wouldn't fit into the trashcan Mac Pros though, so this would be a $600 purchase that couldn't be re-used. In looking at available alternatives, there is no guarantee that you could boot from some of the later models. Still some Revodrives out there, but they would be quite old at this point, and about the same cost. Some reports of success with the Intel 750, but it won't boot without a UEFI bios, which I don't think the 2009 mac pro has.

Well the external eSATA ports are certainly interesting, and they are at SATA III speeds. Fairly slow for a PCIe SSD though. Even in 2008/2009 you could get OCZ revo drives that broke 1000MB/s.

Late model NVMe drives are pushing 2000MB/s through PCIe 3.0/PCIe M.2 slots. Your internal controller only supports up to SATA II, so a SATA SSD upgrade wouldn't be that impressive. They do list boot support, so it would give some pep to your aging machine. Wouldn't fit into the trashcan Mac Pros though, so this would be a $600 purchase that couldn't be re-used. In looking at available alternatives, there is no guarantee that you could boot from some of the later models. Still some Revodrives out there, but they would be quite old at this point, and about the same cost. Some reports of success with the Intel 750, but it won't boot without a UEFI bios, which I don't think the 2009 mac pro has.

So what your suggesting is that an SSD in one of my hhd slots (or bays) wouldn't give me at least 50% more speed and to mention better reliability. I could get a Samsung 850 Pro 1TB Amazon 414.00 but would it be entirely bootable and run Photoshop and recognize scratch disk requirements and Also Adobe Illustrator.