Different drivers in Bios and Device Manager

Hello Community, i have Dell Precision M6600 and i bought it with Windows 10, but there's one problem, when i go in Bios it says "Amd Firepro M8900m Mobility but when i check on device manager and dxdiag it shows as [Amd Radeon HD 6900m], i tried to update drivers but it didnt change. Thanks

 

sorry for my bad english.