They are installed in the following system:
Gigabyte GA-MA 790X
AMD Phenom II X4 (4x2,8 GHz @ 4x3,01 GHz)
A total of 12 GB of DDR2 800 memory
GeForce GTS 250 (512MB RAM)
Apart from the CPU was not overclocked, latches run with STD timing, which I have not changed.
All in all full buy recommendation for the main memory at a very good price ...