Depending on how the 128bit bus affects them these could be superb bang for the buck
http://www.fudzilla.com/content/view/15838/1/
http://www.fudzilla.com/content/view/15838/1/
The HD5750 packs a Juniper LE GPU at 725MHz and 1GB of GDDR5 memory clocked at 1150MHz on a 128-bit bus. It has 1120 stream processors and 56 texture units. Of course, it supports DirectX 11 and shader model 5. This sounds like a pretty tempting deal at just €119.
If you're after the HD5770, you will get an 825MHz Juniper XT GPU, while the rest of the spec is identical to the LE version. While it will be somewhat faster than the HD 5750, we're really not sure the 125MHz higher clock is worth 25 percent more.