When just in desktop it averages around 65-80 degrees C(depends on outside temp). However as soon as I load a game it spikes to 110.5 and stays there until I turn it off, the fan speed is only at 80% until it reaches 110 at which point it hits 100%. I have a AMD ATI Radeon HD 4800 Series GPU that is roughly 6 years old but recently the PSU burned out and I dusted out everything. I am using it in a Dell XPS Studio 435mt which I know has issues with cooling but I genuinely doubt that they would send me a card that is obviously way too hot running for this computer. If there is no other way to cool this card in this case then I would LOVE any suggestions as to what kind of case would fit. Am I wrong to assume that any old medium-large ATX case would fit? I was looking at the Fractal R5 and a few others.