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This is Nvidia’s card, the GT 120. As you can see, it very closely resembles the ATI card. From what we’ve discovered with the help of @DongleBookPro, it’s likely that ATI and Nvidia were sent card designs/specifications and both presented Apple with samples. Apple chose Nvidia.pic.twitter.com/e82BjYqMuQ
As you can see from this photo, the card bears an Apple model number and a copyright date of 2007. This could line up with the timetable needed to get the card into Mac Pros starting in ‘09. If a prototype GT 120 was found, it would likely have a copyright date of 2007 as well.pic.twitter.com/v60DdqOWde
The card has 2 DVI ports, as opposed to the 1 DVI port and 1 Mini DisplayPort found on the Nvidia card.pic.twitter.com/7swvxwwQas
The card may have also been at a disadvantage due to it’s need of a 6 pin PCIe power connector- A limitation not present on the Nvidia card and something that would have messed up the cleanliness of the Mac Pro’s interior.pic.twitter.com/gn59ej7iOS
Opening up the card we have a large blower style heat management system, with a channel for the air to move through and exit. The frame of the card is made of solid aluminum.pic.twitter.com/4B85w5k1gh
One of the Philips head screws holding on the cooling apparatus has been stripped clean, and the screw is torqued down very tightly. That means there isn’t a way to remove the heat sink and view the card’s inner chips and it’s die.pic.twitter.com/jIWaGZpLqL
There is a fair amount of silkscreened information on the card, however the coolest instances of this are an Apple name with a model and EMC number that don’t exist online and a JTAG debugging info table stating “INTERNAL USE ONLY”.pic.twitter.com/HHqPAw666E
There is an interesting locking mechanism which came apart when I removed the wrong screw by accident. I’m not too sure the purpose this lever served but it has 2 screw-lockable positions and had a spring to reset it downwards before it came off. I’m unable to fix the mechanism.pic.twitter.com/yd3ew7rVZ2
Unfortunately the circuitry in this unit is failing, as evidenced by the fact that any Mac it is put into will not boot and displays a purple checkerboard pattern onscreen.pic.twitter.com/gexOnVILDo
This is a very interesting card with an awesome history! We will document this card and make the information available to anyone who wants to read about it, and ensure that this piece of history is preserved for decades to come.pic.twitter.com/pP0KQRn3aU
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