Enough?

[Ts2001]

750 watt enough for:

8gb r9 290 x

Fx 9590

1 ssd

1 3 tb hdd

Optical drive

H80i

1: h perf 120mm fan

1: low red led 200mm fan

[thekeemo]

all the yeses

[PetiteBob]

You would have plenty left 

[hak4fun]

Yup, you should be fine! If you put your partslist into pcpartpicker, it will give you a very close estimate of the wattage your system will use by adding together the ratings for all your components.

[CoolaxGaming]

Yes

But............. Dont get that build.

[soaringchicken]

Yeah, but did you already buy the 9590?

If so, that's to bad.

If not, get a 4690k instead.

[Goussy]

9590.... no no no no no

[IndaLight]

Yeah next time use pc pick a part there is a estimator on the watts.