What's wrong with ddr3?

Question

motherboards

The guys
purchased additionally similar 2 memory sticks to their already existing 2 ae34g1609u2 sticks (ddr3 1600 MHz cl9 each, 4GB each), which would be 16 GB in the end.
inserted.
The bios determined it was normal, but when starting Windows, there were errors and a black / blue screen.
after long dances with a tambourine, I found out that the z68 chipset automatically lowered the timings from 9-9-9-28 to 9-9-9-24 and set 1.65 instead of the standard 1.5v voltage.
I put the entire config in the BIOS for memory manually into stock - it still does not start.
I started testing the plates one at a time and if 3 out of 4 are inserted into the mother, I work with a bang at 1600 MHz. cl9.
as soon as you insert 4 immediately, the bios does not start, then there are errors when loading Windows.
at the same time, I went into AIDU64 with 3 bars and showed that the memory works in two channels, how is this possible?) I
managed to run 4 bars together only if I forced to lower the frequency to 1333, while it was possible to reduce the timings to cl8.
what could be the problem, can anyone help?
thank !

Answer 1

var addr = '["Москва, Кирова, д. 6", "Орел, Ленина, д. 3", "Минск, Ленина, д. 5"]';
addr = addr.slice(0, -1).substring(1);
var arrResult = addr.split('",')
    arrResult.forEach(function(item, i){
        arrResult[i] = item.replace('"','');
    });