Help with an assisting graphics card

[Fake Pilot]

Hello,

I own a PC with Windows Pro 10, that has 3 Titan X's. This one:
https://www.komplett.se/komplett-gamer- ... itan/11004

When I render, my computer kinda stalls a bit, no big problem. I believe it's because Octane starts using all of the graphic cards to render,
while there is no graphic processor to work with all the other apps and my monitor.

I got room to include another graphics card into my tower, but chose before not to do that, didn't want to overheat my Titans with a 4th. They have spacing of two slots in between them, helps to cool them, like this:

Slot 1: Titan X
Slot 2: -
Slot 3: Titan X
Slot 4: -
Slot 5: Titan X

So I asked the company that built the PC (Komplett.se), if they could recommend another graphics card, a cheaper and cooler one, that could be used to simply take care of my monitor and other apps, while rendering.
I wanna be able to keep working in After Effects or other softwares...

These are the graphic cards they recommended, but I wanna ask you guys. Am I missing something important here? Could introducing another cheaper graphics card make my computer crash or overheat?
What graphic card is the coolest?

MSI GeForce GT 610 2GB PhysX CUDA
https://www.komplett.se/product/817202/

MSI GeForce GT 730 2GB PhysX CUDA
https://www.komplett.se/product/853672/

MSI GeForce GT 720 1GB PhysX CUDA
https://www.komplett.se/product/853670/

[bepeg4d]

Hi Fake Pilot,
having a dedicated GPU for displays is always a good idea so you have not to activate the Priority option, and in general, the GT cards has lower power consumption, so it should be easy to add on your system.
Personally I use a Quadro 620k for the same purpose, but it's just a matter of taste, and with GT cards you have less problems of driver compatibility between Quadro and GTX, so a GT card is a good choice
Take care that some GT cards are available in different version with DDR3 or DDR5.
By the way, what are the specs of your PSU?
ciao beppe

[Fake Pilot]

Thanks for helping!

My PSU is this:
Corsair AX 1200i, 1200W PSU
ATX Digital, 80 Plus Platinum, Modular, 6x 6+2-pin PCIe, 16x SATA, 12x Molex
https://www.komplett.se/product/758535/ ... -1200w-psu

While at it, this is my motherboard:
MSI X99A GAMING 9 ACK, Socket-2011-3
Moderkort, E-ATX, X99, DDR4, 5xPCIe-x16, SLI/CFX, USB 3.1, M.2, SATA Express
https://www.komplett.se/product/844958/ ... ket-2011-3

[bepeg4d]

Hi Fake Pilot,
very good
roughly, your PSU seems more than enough to handle another card.
If you want to be a bit more precise, you can try with a site like this in order to have more consistent numbers:
http://outervision.com/power-supply-calculator
ciao beppe