Jetway HA03 Hummer versions of the problem

I checked Hummer Jetway HA03 some of the information found in several versions, as if not the same chip, can not explain the characteristics of each version? Whether some production already? Which version of the most recommended? Why?

is, of course, HA03 is a 790 chip is also HA03-GT is the Jetway 770 of the Hummer brand is
version of the HA03 The most classic of the 790 chipset motherboard
other basic refuse
are recommended to the Hummer, then Jetway HA03 HA03 only 2 versions.HA03 will be able to buy.