622 and 722 are virtually the same device.
The 722 has a 500 GB hard drive whereas the 622 has a 320 GB hard drive.
The 722 is capable of downloading HD programming via ethernet while the 622 can only do SD via ethernet.
Otherwise the only difference is the 722 is black and the 622 is silver.
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Programming: Dish HD Absolute with 0.01 Cinemax
Displays: Sony VPH-D50Q - 7 ft on the wall; Hitachi 57R59
Receivers: DishNetwork ViP722k; DishNetwork ViP211K; DishNetwork ViP211; DishNetwork 301; 2 - TiVo Series 2's; Accurian 6000; Samsung SIR-T351; Panasonic ShowStopper 2000; ATI HDTV Wonder
Dish 1000 on 110,119,129; Dish 500 on 61.5; DPP44
Sony 80GB PS3; Toshiba HD-DVD
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