Hi I have just ordered a sapphire HD 6870 and I am running windows 8.1 in 64bit but on the driver download list for the gpu there is a lot more for users on windows 7 to download but for windows 8 there is only the catalyst driver and hydro vision driver. I only need the catalyst driver but do I need anything else from the windows 7 software such as trixx oc utility and bios update for card? Thanks