AMD ATI Radeon HD 5850 - more affordable and economical version of 5870

A week after the introduction of the ultra-powerful, DirectX 11-ready Radeon HD 5870 ($379), several sites are reporting on its more affordable (at $259) , lower-power-consumption, cousin, the Radeon HD 5850.  The reviews are again pretty rave. It shares the same basic features as the Radeon HD 5870 including DirectX 11 support,  Eyefinity multi-display technology, and new anti-aliasing and anisotropic filtering modes. The new card has fewer stream units (1440 vs 1600), fewer texture units, and lower clock speed.

How does it perform?  To quote Hexus.net “What AMD/ATI has accomplished with the Radeon HD 5850 GPU is the distillation of the range-topping goodness in an eminently sensible fashion”