I am not sure but I know that I have a fan blowing on it at all times. I would say its fairly cool. I have an S1 running at 190GH/s, too, and it isn't having the same issues. I also have two U3's connected to Pool 1800 and they're both hashing at about 80GH/s combined while connected to my Mac through BFG Miner.

It is using an HP 800W PSU with Four PCIe Six Pin connectors. What would be a better option to keep it cool? I have the AC running in my apartment at all times.....I am thinking it needs a better, cooler PSU, but I am fairly new to this.

I switched pools to 443 and it has the same issues that it did at 1800 on us.ss.btc.com.