It works great! G.Skill Ares Blue 2 x 4 GB DDR3 2133 MHz CL9
For my eleven year old PC with Asus Z87 PRO motherboard and Intel i7 4770 k processor I went from 8 to 16 GB because the maximum is 16 GB under Windows 7 family 64 bits.
I ordered this pair of G.Skill Ares Blue Series 8GB (2 x 4GB) DDR3 2133 MHz CL9 and I paired it in dual channel with G.Skill RipjawsX 8GB (2 x 4GB) DDR3 2133 MHz CL9 because the timing is also identical = 9-11-10-28-2N.
I had to think about positioning them well and pushing them in a bit hard (I had forgotten about this since the time...) and it works the first time and like a charm!!!