Pro
________
Bragging rights for 3-way 980
Can look badass
Con
_______
More money
But seriously, what kind of stuff are you doing, whats your monitor setup- all this can make it more or less of an useless upgrade
if you already have a large monitor setup (triple 4k or other outrageous setups) then it may make sense
If you have 1 20 inch monitor- it'd be a large waste of money.
if your playing bf4 ultra settings or bitcoin mining it may be more sensible than if you only web browsing.