2 GPUs, one running at 70c and the other idle?

[yoToco94]

Ive a triple monitor setup with 2 EVGA GTX 970, one is SSC and the other SC. Currently I'm not using it in SLI mode as I like to game with one monitor for game and the others to monitor temps, browsing the web etc. I noticed that the first GPU runs at 70c while the second one stays at 34c. I currently have the center monitor connected to the first GPU and the other 2 to the second one. And still the same. What can it be?

Setup:
Asus Maximus Formula VII
i7 4790k
Corsair H100i

 

[tsuneo6]

your second card doesnt rly get used. so it doesnt get warm

 

[yoToco94]

your second card doesnt rly get used. so it doesnt get warm

Is there any way to use it? Enabling SLI?

 

[tsuneo6]

yes, SLI.Awith it not rly being used I meant, it's only used to show stuff on your screen, like word, google chrome etc. that doesnt require much power from your grpahics card, so it doesnt get warm. abd to use both as one you'll have to enable SLI yes