What card would bottleneck a 980?

What level card/cards would be the maximum not bottle necked by that processor?

If you mean the Phenom 980 Black....

I think that you are pretty OK with any modern card. GTX 760-ish maybe?

*Edit: What board is this CPU in? (Since on AMD's the PCIe lanes, etc. are still coming from Northbridge/Southbridge combos instead of straight from the CPU like on Intel's current generations.)

Yes it's a 980 BE. It is in an ASUS M4A87TD EVO with an SB750 chipset.