Summary: Terrific quiet card for home theater applications. It can also be used for gaming, albeit at lower settings than higher end cards. If you want a gaming card and cannot afford a new high end card, You're better off buying a one or two generation old high end model such as a gtx580 or r6970. As this card uses passive cooling, if you use it for gaming you run the risk of burning it up.
Summary: It does 4K but I am getting some judder (studdering). This may not be the cards fault so YMMV. However for 1080p it is flawless and have not had any driver issues or other problems using this on my HTPC.
Summary: I originally purchased this card to upgrade from an 8400GS that only had 256Mb of on board RAM using an ASUS M2V-MX SE motherboard however that machine wouldn't recognize it or even boot up at all so I initially thought the card was DOA and was going to return it but then decided to try it in my GIGABYTE M61PME-SP2 and it works just fine with that motherboard.
Summary: This is by fsr the best performing video card that I have ever owned. Paired with an AMD FX 6 processor, eight gig of ram,and a1 terabyte Seagate Barracuda Drive, the performance scores on my Windows 7 machine went from 5.42 to 7.8