I recently bought 3 Sapphire Toxic's from a group buy here, + 1 MSI in local shop, and I have to say that MSI is a "little bit" worse:
https://bitcointalk.org/index.php?topic=438191.msg4804508#msg4804508
But funny thing, in your case... GPU0 being your MSI right ? It's the coldest one
You're running on open-air or chassis ?
Thanks !
I had lower fans set for toxics at that time:
https://bitcointalk.org/index.php?topic=438191.msg4844662#msg4844662
all fans at 55% and lowered power usage
EDIT:
Oh, and open-air