My price range is $500, my current parts are as follows.
- Enermax Revolution 87+ 1000W
- MSI Radeon R9 290x 4G
- Intel Core i7 4790 (not to be mistaken as i7 4790k)

A colleague recommended that i get "ASUS Z97-A" for a new motherboard however i am unsure this is the right choice. Please help me???