Has a A10 1.8ghz locked (source:plasmio)
Can be combined with dual graphics, but not if the laptopcase does not support it. Has a 2gb 900-1000mhz graphic card who can only handle 64 bit at a time ,but has 2x higher processor rating compare to 7670m.
The card consume 50 watts compare to 7670m 15 watts.
On the other hand does not need to handle with the A63420m dual graphics performence downgrade from the intigrated graphic card.
The performence of A6 3420m+7670m may be equal to hp 8700p if the App uses 2.5D since the dual crossfire combines the cores and strip the performence based on the weakest core with the weakest speed rating(just like a dual core cpu).one plus is that hp8700 can handle FHD, but if you are going to use 3D enchanted videogames you will most likely not play at Full high definition anyway.