Summary: Even under heavy CUDA compute loading (not video related), card temperature stays under 77C. Fans are quiet, I just barely hear them over the top of the noise from the fans in the laptop that sits 2 feet away. When I stop CUDA loads, card temperature and fan speed drop dramatically.
Summary: I just bought this card the other day after my old Radeon HD 4850 bit the dust. I did a bunch of research and was really leaning toward the 570 but the price on it was quite high and I couldn't quite justify a $350 card for my current needs. I went with this GTX 560 and could not be happier. It runs cool, quiet, and fast. It has played all my games in the high settings without a hiccup.
Summary: Ran multiple OSs in a full tower with plenty of airflow, 600W PSU, and a Gigabyte GA-Z68X-UD3H-B3 Mobo. Experienced decent CUDA performance on various flavors of Adobe Creative apps, about as expected for # of CUDA cores and memory. Also ran Nvidia 3D Vision to a 1080p Visio TV over HDMI just fine on a variety of games up to, say, Bioshock Infinite. Never had a major problem running 1280x720 (720p/60 or 1080/24 are the only choices) with maxxed settings and AA.
Summary: Overall, the card works great. I am one of those computer nerds who is always hyperventilating when he has to switch out a part for fear of breaking his system. Well luckily it's still running well. However when I first got this card I got tons of artifacts on the screen and all sorts of other junk happening while I used it. That's not to say they are bad. They are about 25% better than my old GeForce GTX 460s by Nvidia.
Summary: I previously had another brand that carried a "lifetime" warranty.. until they went out of buisness that is. I paid $400+ for that card and it lasted 2 years. I decided I would no longer put all my eggs in one card so to speak and went back to running SLI. The cards came packaged ok everything was there except an SLI bridge which was a little stupid. Thank god I had one from previous incantations of SLI. No porblems installing them at all.
Summary: I bought this for my Hack system and it's been great. It's super quiet; I can barely hear it even with the sides off of my tower. I only played a couple of games on the mac side (Portal 2 and Left4Dead 2), but they played great on the highest settings. Had a mobo problem, so I haven't tried it with windows yet, but I'm confident it will work great. I'm more interested in that my video render time was significantly shortened.
Summary: I have tried to stress this video card with everything I can by maxing out graphic settings on every game I play, and there is no viable lag or choppiness in any way. I'm not a serious gamer, nor do I run more than one display. I recommend this card to anyone who wants to play the latest games.