Benchmark Reviews posted a review on the ATI Radeon HD5450 HTPC Video Card

Just when I thought they had finished cutting halves, ATI has taken the 40nm Cypress architecture to a new low. Low power, that is. In a brand new design, unlike anything they have released with this architecture, ATI is going after the Home Theater PC market with their heat sinks blazing. OK, I exaggerate; the Radeon HD5450 video card actually runs pretty cool, which is the point, really. It's silent, too, with a large and lovely red heatsink sitting atop the tiny GPU, sans fan. Follow along with Benchmark Reviews as we investigate an early sample of ATI's new standard bearer for low-power HTPC applications.

ATI Radeon HD5450 HTPC Video Card Review