It is using the integrated GPU, it's a laptop that only has an integrated GPU. Also, lshw is having the same problem it had with my old computer, where it doesn't seem to list the right clock speed and just says it's running at 33Mhz. I know this is wrong because on my old computer, other software would state the clock speed was much higher. But another thing I'm noticing that's wrong is the GPU is listed as an R3 when the GPU is actually an R2, so unless they share drivers, It's possible that Mint (I'm using Linux Mint) installed the wrong drivers.

  *-display                 
       description: VGA compatible controller
       product: Mullins [Radeon R3 Graphics] [1002:9850]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI] [1002]
       physical id: 1
       bus info: pci@0000:00:01.0
       logical name: /dev/fb0
       version: 40
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom fb
       configuration: depth=32 driver=radeon latency=0 resolution=1366,768
       resources: irq:38 memory:e0000000-efffffff memory:f0000000-f07fffff ioport:4000(size=256) memory:f0d00000-f0d3ffff memory:c0000-dffff

I just tried glxinfo but it didn't do anything and unless it's called something else, apt can't locate the package.