Summary: I bought this for the hdmi hookups which my old card did not have. Since I have installed it my monitor frequently goes black for a few seconds. Its very irritating and happens at random times. I see no difference from my old 1gig DDR2 video card.
Summary: The heat sink wraps around the top of the card, and protrudes enough on the back side that you can't install it if there is something in the next slot. This was the only slot I had available, so I will return this card today.
Summary: The ATI specs indicate that the 5450 is Eyefinity (3+ multi-monitor) capable. For Eyefinity, the card has to have a DisplayPort connection. This card variation has HDMI, not DisplayPort. So you get to choose 2 of the 3 connections for up to 2 monitors. The 2 you connect will work OK.
Summary: The video card came on time. It works OK on my desktop, though it has difficulty rendering HD video playback: when you plan HD video and want to seek, the image becomes distorted (artifact). You have to pause the video and then resume it again to fix that. Another complain is about its rebate program. At the time of purchase, the company offered a $15 rebate.
Summary: The card basically works (including playing blu-ray movies) but I was disappointed to find its desktop performance was pretty slow, and after a while I found the noticeably jerky movement it caused was annoying, even just doing simple things like moving a window on screen. I've stopped using the card and bought a faster one.