Is this AMD's mid-range HD 5750?

Over on mymypc.com there are photos and benchmarks of what is claimed to be AMD's mid-range HD 5750 graphics card.

Assuming that this isn't a wind-up, the HD 5750 features 1,120 stream processors running at 700MHz, along with a 128-bit memory interface and to GDDR5 memory humming along at 4,600MHz. Not that impressive when compared to say a Radeon HD 4870 or HD 4890 card.

Another thing that strikes me about this card is that it seems huge for a mid-range card. The fan is enormous and the card takes up two slots. Maybe "size" does matter ...