Summary: The card no longer working because i got a burning smell and when i opened it up found that one capacitor on the card board was fried. It has been just 2 years i bought it. Its out of warranty as Sapphire. The fans can get noisy at 100%, but with the included software you can stop that from happening via the custom fan profile, and honestly, they never need to run that fast to keep it cool anyway. Very disappointed.
Summary: There is no question that the game performance of this card is excellent. It's connectors are also well laid out so installation was a breeze. My problem is that the on-board fan failed after less than 1 year. Unless you are opening your computer up or familiar with examining the log files of your PC, you probably won't know why your system is suddenly having unexpected reboots and shutdowns.
Summary: Bought mine through new egg. Seem to work fine and even ran great for a while under Windows 7 64bit. Unfortunately it was too late when I realized I had an issue. The black and grey screens of death requireing hard-reboots started happening when I started actually putting stress on the card with Mass Effect 2. It only got worse when I got a new 23" monitor (upgraded from a 19") and started running a higher resolution. Long story, short-- it is now RMA'd with Sapphire.
Summary: I bought this card in order to replace my GTX 260 on my Home Theather PC. I just built a nice 5.1 surround sound system and i wanted to be able to play my Blu Ray's/ games through my PC with full uncompressed sound. This card worked amazingly well for sound processing but graphics were another story. Graphically the HD 5770 is actally a downgrade from my old GTX 260 192sp card, even at 720p resolution.
Summary: I got this card about 2 weeks ago. It is quiet and performance is quite good -- a big improvement over my GTS 8800 512, however I've had problems with some BSODs when launching games. It only happens when launching, and it happens 100% on some games. It's not power (I have a good 900w P/S), it's not driver (I have the most current from ATI).
Summary: Ich besitze diese Grafikkarte nun 2 Tage. Die Leistung ist, wie zu erwarten war, befriedigend. Battlefield BC2 ist auf höchsten Einstellungen im Multiplayer gut spielbar. Allerdings ist diese Performance bei einigen Sapphire Karten dieser Serie anfangs limitiert. Ich rate unerfahrenen Usern an dieser Stelle also DRINGEND vom kauf einer Sapphire HD5770 ab!