So it turns out that my RMA sticks that came from Corsair are all faulty. I'm starting to see T_Flight's point on Corsair sucking badly. How can they send me new DRAM only to have each stick fail Memtest86+ 2.11?
They all fail in test 5, after a few passes. Not in the first pass, but after about 5 passes they start to produce few but steady errors in tests 5 and 6. Going back to my faulty kit (-1 stick ATM) I do not have any problems.
Furthermore, the new kit clocks worth $hit. It won't run X.M.P. profile at all, even at all defaults, and it cannot clock past 1650MHz.
I'm failing to see what this sticks are "dominating".
My original kit asside from the one faulty stick can clock up to 1900MHz stable with 9-9-9-24-1T timings (7-7-7-16-1T at 1600MHz). The replacement cannot even run 1600MHz (rated) stable.
Anyway, I'm back running dual channel now using my remaining two good sticks from the original kit. Here is an Everest screen with the current settings, 4GB 1600MHz 7-7-7-16-1T, 4GHz Uncore using 1.45V QPI/DRAM.
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