So far so good !! they do the 1100 @ 1.9 as spec'd
I have had them upto 1180 and they worked fine until a random shutdown
which I honestly dont think was ram related , (broken sata connector on a drive I was backing up)
Needless to say we are going to crank em up a notch
and get cranking on the timings and limits.

So far , an excellent kit for the money , cannot be beaten IMHO.