Dell Inspiron Radeon M260 not M265

Hi,

I've taken delivery of a Dell Inspiron 15 5000 I7 laptop today.

It was advertised as having an AMD Radeon M265 2GB graphics card. However, in both Device manager and Catalyst centre it is showing up as the lesser M260. From what I've read on various benchmark sites and forums it looks like the M265 is about 10-20% better performance wise. Is anyone able to confirm this whether the M265 is indeed superior (as the name suggests).

I've emailed Dell support to ask why it shipped with the M260 and what the difference is.

thanks