i have a dell inspiron 7520, it has the radeon 7730m and it is fantastic it will run any game medium to high settings and it looks great, i definitely recommend the 7730m, the 7730m is an dedicated card so it is NOT integrated what so ever, it runs metro 2033 on medium to high settings with 50 to 60 fps
It does not mean onboard integrated graphics, it is indeed DEDICATED
but the chip is soldered on the motherboard, (i.e. ICC card)
not like desktops, separately fixed in a pci-e slot (i.e. removable graphics card)
The GPU failure will cause to REPLACE the whole motherboard, removable GPUs don't.