The "Asus 6850" suggests a GPU i.e. an ASUS HD 6850 and not what MOBO you have.
Q - What MOBO (Motherboard) do you have?
If you're not certain then you can look at the 'Mainboard' tab using CPU-z - http://www.cpuid.com/softwares/cpu-z.html or if you PC is an OEM e.g. Dell/HP/etc then I need the model number printed on the case.