Precise instructions for getting x2 ATI Radeon HD 5870's in your Mac Pro (2009-2010) | MacRumors Forums
![HIS HD 5870 1GB (256bit) GDDR5 PCIe (DirectX 11/ Eyefinity) < HD 5800 Series < Desktop Graphics < Products | HIS Graphic Cards HIS HD 5870 1GB (256bit) GDDR5 PCIe (DirectX 11/ Eyefinity) < HD 5800 Series < Desktop Graphics < Products | HIS Graphic Cards](http://www.hisdigital.com/UserFiles/product/H587F1GB-1600-3.jpg)
HIS HD 5870 1GB (256bit) GDDR5 PCIe (DirectX 11/ Eyefinity) < HD 5800 Series < Desktop Graphics < Products | HIS Graphic Cards
![7121587000G - ATI Tech ATI Radeon HD 5870 1GB GDDR5 PCI Express Video Graphics Card for Mac Pro (Early 2009/ Mid 2010/ Mid 2012) 7121587000G - ATI Tech ATI Radeon HD 5870 1GB GDDR5 PCI Express Video Graphics Card for Mac Pro (Early 2009/ Mid 2010/ Mid 2012)](https://cdn11.bigcommerce.com/s-2ktyxsrgtc/images/stencil/1280x1280/products/144970/150665/1474622882__65004.1514309615.jpg?c=2)
7121587000G - ATI Tech ATI Radeon HD 5870 1GB GDDR5 PCI Express Video Graphics Card for Mac Pro (Early 2009/ Mid 2010/ Mid 2012)
![HIS HD 5870 1GB (256bit) GDDR5 PCIe (DirectX 11/ Eyefinity) < HD 5800 Series < Desktop Graphics < Products | HIS Graphic Cards HIS HD 5870 1GB (256bit) GDDR5 PCIe (DirectX 11/ Eyefinity) < HD 5800 Series < Desktop Graphics < Products | HIS Graphic Cards](http://www.hisdigital.com/UserFiles/product/H587F1GB-1600-2.jpg)