Slightly confused here. Can you give a full list of the specs in your machine? Speccy is good enough for that (free from Piriform). From what I understand, you have a laptop with an AMD Quad Core mobile CPU, namely this one: http://www.notebookcheck.net/AMD-Kaveri ... 332.0.html
You mentioned the R7 260M as well (assuming it's an R7 M260) which is a more powerful GPU. However, you would need to check the settings in your AMD control panel to double check that the discrete GPU is being used. I had this issue with my laptop as well, where I had to force GRIP to use the main GPU only. I don't believe that SLI or Crossfire are supported much at this time.
Out of interest, which AMD control software / driver do you have installed for the GPU? I might be able to help you double check the settings for it if you like.