FutureMark 3DMark11 and 3DMark Vantage
In 3DMark Vantage, we tested both boards in the High resolution mode. From the chart, we can see that Gigabyte G1 Sniper is faster than the ASUS Rampage III Gene in this test scoring H9400 vs H9389.
What about 3DMark 11 in Extreme test. It is a tie with X1140 vs X1141. The results are almost identical.