I check dxdiag and it shows that I have the AMD A8 3870 (no k) and task manager shows that it only has 2 cores and is clocked at 3 ghz. I cannot find this processor on the AMD website or Amazon.
The only model I can find close to your CUP is the AMD A8-3870k.
http://imgur.com/QGlealM I used speccy and it says my CPU has 2 cores and is clocked at 3 Ghz. It also says it is called the AMD A8 3870 (no k). Searching it on google comes up with no CPU results just old GPU's.