Require a little help here.

[Flomac]

I'd say if you buy it just for playing around, cut down on the mobo and buy a cheaper one with two PCI-E slots. Put the saved money in a decent graaphic card like epixoip suggested and you still have room for another one later. Don't waste money and time with something like the 750Ti unless its lying around. It's already outdated since the GTX 960 just came out, which offers better performance, better price/value, a newer chip generation and reference design. Two GTX 960 cost less than one GTX 980, but should perform equivalent with Hashcat. So there you go, if you get yourself one of these you can upgrade later and still have very solid performance on your hand.