It would make an ideal upgrade for a Radeon HD5870 if you want to upgrade to Mavericks. Requires 2x 6-pin power cables. The card has provisions for an 8-pin power connector however it is not required as the card is running at reference clocks and power states. Includes the card only, no power cables or display output adapters are included.
No, I will not just stick things in a padded envelope with some stamps on it. The item "EVGA nVidia GeForce GTX680 4GB PCI-E Graphics Card for Mac Pro 2008 2012" is in sale since Saturday, January 12, 2019. This item is in the category "Computers/Tablets & Networking\Computer Components & Parts\Graphics/Video Cards". The seller is "savagemadman" and is located in Richmond, British Columbia.
This item can be shipped to Canada, United States.