Hi Kallan,
I did a lot of research on this last year for my then new purchase of a used MacPro 3,1 Octo core 2×2.8 machine. You should know what path you are heading down before buying that card. BTW, it’s listed as a 480 not a 570. I could not recommend paying that much money for a GTX480.
Prices have come down on PC video cards like the 480 in the last 12 months since the introduction of the 6xx and 7xx Nvidia video cards in the last 12 months. This makes some new options available, see below and use google. In general the 6xx cards offer the same performance with less power consumption than the 5xx cards. BTW, here’s a good site for comparisons: https://www.hwcompare.com/12524/geforce-gtx-570-vs-geforce-gtx-670/
Some history:
The bad news for MacPro users desiring a Nvidia card is the only official mac compatible Nvidia PCI card released recently is a very expensive and often out of stock GTX680 (there was a GTX 285 and a GT120 in the past). This stranglehold on Macs and push towards ATI cards and FCPX use seems to be a strategy recently at Apple (sorry, OT). This lead a COW member Dave Pirinelli (aka: MacVidCards on ebay) to develop custom firmware for hacked PC video cards with the Mac EFI firmware on them (Mac uses EFI at boot and this provides the Mac’s grey boot screen). Read Dave’s post here( it’s the last one): https://forums.creativecow.net/thread/2/1017518#1017641 Also: https://my.creativecow.net/David-Pirinelli
I have read all over the internet Dave’s posts that the GTX 480 (the card you linked to on Ebay) requires more power than the MacPro power supply can provide. Over time this can ruin the power supply and other internals of the MP. Dave stated in one of his many posts on Netkas, MacRumors or his ebay ads, that he had to dial back the clock speeds on the GTX 480 and 580 to reduce the card’s power consumption, to be within the mac spec. For awhile his cards were the only option for MacPro owners and many members here may own one.
Dave’s hacks were unfortunately pirated and since then many more eBay sellers have sprung up selling mac compatible cards. I believe your AUS seller maybe one such person. Your AUS seller also doesn’t mention if the clock speed has been dialed back. They may or may not know what they are doing. I’d stay away from 480 or 580 regardless. Dave is the source and it looks like he is on vacation but may have some cards up again soon.
The bottom lines is if you want to use an Nvidia card in the MP AND have an EFI boot screen you are limited to expensive: OEM GTX 680 or hacked cards. Dave is the source of the knowledge behind the hacked cards. Once COW member reported having a problem with a hacked card from him: https://forums.creativecow.net/readpost/2/1032628 …FYI. YMMV.
The good news is Apple has started to roll most Nvidia drivers into the OS, and Nvidia offers even more up-to-date web drivers after every OS update.
The other option is if you are running 10.7.4 or later, and don’t mind losing your boot screen, you can buy a PC video card (again not a 480 or 580 due to power consumption) and get great results. I did this on my 3,1 with a GTX 470 I bought for $100 USD used and it worked well. There are many discussion on this on the internet. Here one: https://forums.macrumors.com/showthread.php?t=1440150&highlight=macvidcards
Please do your own independent research as the newer options may include the 7xx series, which I know nothing about.
Phillip Todd
Cinematographer
https://vimeo.com/philliptodd