Benchmark Reviews posted a review on the ATI Radeon HD5570 DX11 Video Card

With this latest release, ATI is doubling back to fill some gaps in its wildly successful Radeon HD5xxx series of video cards. The previous release, the HD5450, was the logical terminus of their GPU bisecting act. In fact, they got a little carried away, and lopped off almost all the Stream Processors, in order to reduce the power requirements down to the lowest possible level. This time, the goal was to create the best performing low-profile HTPC card they could. The HD5570 is the first in a series of HD55xx video cards, and for now, it will probably be the top card in the group. Loaded up with the Redwood GPU from the HD5670, 1 GB of GDDR3 memory, and an all copper active GPU cooler, the HD5570 looks to be the King of the low-profile world, without the attendant King's ransom. Follow along with Benchmark Reviews as we see how it stacks up against its siblings.

ATI Radeon HD5570 DX11 Video Card Review