not quite sure what you are asking.....?
1. why does the T604 need 3.0?
- because support for new standard is just lovely
2. are you sure the T604 doesn't support 3.0?
- well the product page does not list support for 3.0, but i'd love to find out otherwise
oddly enough someone at Chronos obviously thought it would:
www.khronos.org/assets/uploads/developers/library/2012-pan-pacific-road-show/OpenGL-and-OpenGL-ES-Taiwan_Feb-2012.pdf
so can we get to the bottom of this:
a) does the T604 support 3.0?
b) if not, why not (given that the rest of the family does)?
Because it would be more than absurd for an as advanced GPU (in a relative sense for the small form factor space) like T604 to not support OGL_ES3.0. On one hand it supports advances stuff like atomic operations and FP64 and not ES3.0?