5800k or 5600k?

How much better is the a 10 because if not then Should i go for the a 8 cus its cheaper?

5800K. Not much more expensive, and about 10% better. 

EDIT: just noticed they're the same price. Get the 5800k for sure, you can overclock it and you can't overclock the 5700.

alrighty thanks 

bump for new question 

I had an A8 5600k before, and it was SO SIMILAR to other peoples benchmarks comparing to the a10 5800k it's not worth it. If you crossfire a 6670 with the A8 5600k, in some cases the A8 5600k did better than the a10 5800k!

The a8 5600k would definatly be enough.