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<blockquote data-quote="lclev" data-source="post: 1750237" data-attributes="member: 307555">I have a 2009/2010 Mac Pro (the firmware has been upgraded to make it &quot;think&quot; it is a 2010).&nbsp; I currently use a PC video card that has not been flashed which means no boot screen.&nbsp; It is a Gigabyte Geforce GTX 780 w/ 3gb.&nbsp; I also keep the original GT120 in the MP but I do not attach a monitor unless I need to see the boot screen.&nbsp; I am using the stock Apple drivers.I have been very happy with the card.&nbsp; The only quirk I have seen has to do with Sierra.&nbsp; If the MP goes to sleep and then wakes any video it plays is jerky.&nbsp; Restarting it fixes the issue.&nbsp; I have not found a permanent fix for it but the issue started with Sierra.&nbsp; I use my MP for video editing using Adobe CC apps.&nbsp; I chose to upgrade my 2009 to a 2010 to keep it eligible for OS upgrades a bit longer.&nbsp; I am not sure how well PC cards will work with a 2009 but I have put a link below that will give you more information.&nbsp; It is a long set of post starting back in 2012 but when I was putting together my MP and needed information it was very helpful.<a href="https://forums.macrumors.com/threads/frequently-asked-questions-about-nvidia-pc-non-efi-graphics-cards.1440150/" target="_blank">https://forums.macrumors.com/threads/frequently-asked-questions-about-nvidia-pc-non-efi-graphics-cards.1440150/</a>Lisa</blockquote>

[QUOTE="lclev, post: 1750237, member: 307555"] I have a 2009/2010 Mac Pro (the firmware has been upgraded to make it "think" it is a 2010). I currently use a PC video card that has not been flashed which means no boot screen. It is a Gigabyte Geforce GTX 780 w/ 3gb. I also keep the original GT120 in the MP but I do not attach a monitor unless I need to see the boot screen. I am using the stock Apple drivers. I have been very happy with the card. The only quirk I have seen has to do with Sierra. If the MP goes to sleep and then wakes any video it plays is jerky. Restarting it fixes the issue. I have not found a permanent fix for it but the issue started with Sierra. I use my MP for video editing using Adobe CC apps. I chose to upgrade my 2009 to a 2010 to keep it eligible for OS upgrades a bit longer. I am not sure how well PC cards will work with a 2009 but I have put a link below that will give you more information. It is a long set of post starting back in 2012 but when I was putting together my MP and needed information it was very helpful. [url]https://forums.macrumors.com/threads/frequently-asked-questions-about-nvidia-pc-non-efi-graphics-cards.1440150/[/url] Lisa [/QUOTE]

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