Radeon hd 7690m vs gt555m

They are pretty much identical in terms of performance(555M being slightly faster)

Even radeon is in DDR5?

Yes,but as I said,the difference isn't much(not notable)

Thx, Maziar. How about comparing 7690m with gt635m? still the same?

Yes,pretty much the same.(635M is a re-badged 555M).I recommend going with 635M because Nvidia drivers are a little more stable for notebooks

i got another question..
nw i have to choose either hp or toshoba laptop,
1. hp pavilion dv6-6c 19TX
2. toshiba qosmio F750-1010X
which better in all specs?