I retested many settings today with 12gb and 18gb memory. I could not break 63gflops with 3600mhz uncore.
AIDA shows the memory bandwidth is fine... I'm not sure this is directly related to the third channel... I lose performance after 9gb... not 8gb... so the third channel has to be partially in use...
It is a strange problem... I'm not very worried though, my performance seems fine even after starting many virtual machines and using all my memory.
I started a discussion for this issue here:
http://www.xtremesystems.org/forums/...d.php?t=271333
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