That has nothing to do with the CPU though. The card will cost more if it must be PCI or PCIEx1 but I don't think the interface should be much of an issue for a non-gaming card.
That's because I missed the line in the OP stating they didn't want to play any games.
If someone's going with a 1080p monitor, I'd assume they either play games, or watch Blu-Ray movies (or perhaps photo edit). Otherwise such a high resolution sort of seems like more than is needed. But that's all about personal preferences.