i got 18 of them. they are all on different boards. i just swapped the ASUS cards around to see if it was a different rig that was causing them to heat up. yea they are all getting the same hash rate. the msi are getting 470. i dropped the settings on the ASUS to make them run cooler so the are running around 420. i have some sapphire 7870s that run cool. i thought about trying that heat sink on the Asus. It looks like they line up. This would let me know if the heat sink on the asus is the problem.