i found this review that covers both CPU's, and more.
AMD A10 6800K review - Performance - Video encoding | Transcoding
The A10-6800K didn't impress me that much.
it even struggles to beat the older i5-2500K. You can get a brand new forth gen I5-4670K for 80 bucks more, and it's miles better.
i can't wait to see how the upcoming forth Gen i3 stacks up against the A10-6800k.
My guess is that the upcoming i3 will make the A10-6800K eat dust.