Here is the card. It's an Amazon link to the product being sold, but it will show the outputs.You might want to list the outputs your cards have so I...uh... we can make sureYou'll need either a (mini)DisplayPort-plus-A1306 or a straight dual-link DVI for each 30". HDMI is no good because there's no HDMI-to-DL-DVI adapter, at least not to my knowledge.

Epic IT Service - Geforce GT 640 for Mac Version, with 1GB GDDR5, PCI Express Gen 3.0, DVI-I DL, HDMI 2.0, DisplayPort 1.2, DirectX 12 (Boot Camp) Light Performance Board - OEM
This GT 640 card is embedded with apple EFI BIOS to support showing Mac OS boot up gray screen. It has adopted efficient Kepler architecture, runs quite and cool; it has moderate performance, great for running photoshop, also good for casual video editing. This card supports Apple Metal API, enha...
www.amazon.com
MODS!! NOT MY STORE/PRODUCT/AUCTION/ETC, I AM NOT SELLING ANYTHING!
In any case, as I do not have the time to do this without rushing stuff I was thinking I'd test the other two ports first just to see. But if you tell me I can't do it then I'll probably hook them up somewhere else.
In any case, that's all the exploring for today. I promised my wife coffee and I haven't eaten yet. And, I also have other things I want to get done. I've waited this long, I can afford to take this leisurely.
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