don't know how they run on AMD but on intel they are quite good
i've 2 kit of kingston 2133 cas9 2x2gb with these chip, they scale pretty well with the voltage and work quite good at high frequency.
the first kit can do 2450 MHZ cas6 suicide shot and 2400 benchable, the other kit cas6 and cas7 is pure crap (2000 MHZ cas 7 is a no go...) but cas8 is only a bit worst than the better one.
like PSC they love high tRCD, at least CAS + 2

32M @ 2375 MHZ / 8-11-8-28 1t / 1.86 volt