Consider your options carefully before deciding.
Consider your options carefully before deciding.
He understood that "Default VGA driver" referred to a basic VGA software not tailored for any particular graphics card. It's the kind used by many servers simply to ensure the display appears. He wasn't talking about the update installer Windows finds, which is a certified driver developed specifically for the GPU and verified through WHQL.
It seems there might have been a mix-up in the details. Windows 10 with an HD 4870 GPU should support installing drivers for older systems like Windows 8.1 x64, including the Catalyst 13.4 beta. The default driver is typically optimized for performance, so you shouldn't encounter issues with speed.
The AMD HD2000 to 4000 series includes a fully functional driver that can be added via Windows updates. It doesn't support CCC but functions properly. I was referring to the VGA driver shown in the picture above. Microsoft upgraded the WDDM from 8.1 to 10, so an 8/8.1 display driver won't install or work on 10.
You're questioning whether to upgrade or revert to an older version of Windows on your system running Windows 10. If you prefer Windows 7 more than 10, then upgrading might be the right choice. Personally, I use a 7-box setup and hope the upcoming Windows release offers improvements over 10. I value having my computer function as intended, rather than like a tablet.