Welcome to Tom's Forum!
You can run 1.65v RAM on your GA-890GPA-UD3H with no damage. Yikes, the Google url goes to OCZ Gold whicj is about the worst RAM out there?!
You need to KNOW that not all 2x4GB, 4GB density per stick, will work on your AMD. Especially with 4GB sticks a couple things: 1. Update your BIOS, and 2. Use either QVL or RAM Mfg's Tested list(s) - example Corsair's -> http://www2.corsair.com/configurator/product_results.aspx?id=1529911
The F3-10666CL9D-8GBSR don't list the AMD 890.. chipset -> http://gskill.com/products.php?index=388
whereas the G.SKILL F3-10666CL9D-8GBRL -> http://gskill.com/products.php?index=233
does list the AMD 890 chipset.