Each card is different wa1 ,some cards raise more than 80c under load like 5970http://www.legitreviews.com/article/1141/11/
"We fired up FurMark and ran the stability at 1280x1024, which was enough to put the GPU at 100% load in order to get the highest load temperature possible. This application also charted the temperature results so you can see how the temperature rises and levels off, which is very nice. The Radeon HD 5970 maxed out at 86C"http://www.anandtech.com/show/2877/16
"At load, we see a similar but slightly different story. It’s no longer the coolest card, losing out to the likes of the 5850 and GTX 285, but at 85C it hangs with the GTX 275"http://www.techspot.com/review/221-ati-radeon-hd-5970/page15.html
"The operating temperature of the Radeon HD 5970 is well within acceptable levels, with an idle temp of 60 degrees. Under load the card heated up to 87 degrees"
PS,the OP has a Coolermaster HAF 932(as he mentioned),which has a quite good cooling