So I tested the back of the card with my laser temp tester, but couldn't test the spot by the gpu due to my recon 3d card covering bout 60 percent of the card. Just enough exposed to test the right side ram. Under full load it's hitting between 35c and 55c, so not bad.
My concern is the backside of the card where the gpu is. I'm just thinking the backplate doesn't really let air flow from that spot, so my worry is over long term game session the heat will build up. But again, it'll be over water cooling so maybe not. Kinda wish I waited for the evga backplates to come out. Maybe i'm just worrying to much, but this card costed me $1150 not including gpu block and other parts, last thing I want to do is ruin it over something stupid. 
 
Does anyone with a waterblock installed have a tester so they can read what kind of temps are coming off the backside of the card by the gpu? If not i'll probably rip the recon3d out and test myself later. I'm sure they wouldn't design a backplate without testing it. Anyone ever use a full cover non venting backplate, and if so have you ever had any issue's with the card?
 
Not trying to be anal, just this is a lot of money to me and want to do it the right way, last thing I want is damage this card.
 
Thanks for everyone's help. Really appreciate it. :D
 
Thinking about cutting a square hole in the center of the backplate just to be safe.. ??