that first pic shows what looks to be 6 empty spaces for ram ?

could be the angle. but anyways it looks like there only two on the top side & eight on the back of the PCB

the 4870 have 8 gddr5 on one side. http://www.overclockersclub.com/revi...r_hd4870/2.htm

maybe those are high capacity chips & thats why it's not coming out as soon