The cooler on HD 5750 is apparently enough for the HD 5770 as well and after all it should be cheaper than the original blower fan. This isn't a non-reference in house design as it comes directly from AMD, and we are sure that we'll see the real non-reference cards sooner than later. As a matter of fact, the shroud is the only similarity with the HD 5750 cooler, while the heatsink under it is changed.