Could I add a 970 for SLI after building a computer already with a 970 in it???

[MichaeldaFritz]

I'm looking to build a computer and I want to have dual SLI's the manufacture only had one in stock and I bought the one but I wanted two in SLI, is it possible I could by the other one later after building and powering on my pc or not. Thanks 😀
It is a Asus Strix 970 with a MSI MPower z97 motherboard with a Intel 4970k and 16 gb of corsair dominator ram clocked at 1833 with a corsair CX750M BTW

Thanks in advance

 

[Vosgy]

Yer you just open it back up (while off 😛) Put the new card in the correct slot (consult you motherboard manual) connect the Sli bridge and boot, then go into the nvidia controller and enable SLI
Just looking at your PSU there, the CX series are generally not recommended for use is SLI builds as their stability isn't great consult this http://www.tomshardware.com/forum/id-1804779/power-supply-unit-tier-list.html and pick a tier 1 or 2 would be a good idea.