I bought this memory for one reason only-- to try to get some better performance while maintaining a stable system. I use this with the Intel X58SO board, and I had been using corsair TR3X6G1600C8D memory. This is definitely cheaper, but didn't perform any better. I thought because this memory was prequalified for an additional XMP profile that it might perform a little better, but the second XMP profile it had that Corsair didn't caused my system to be unstable.
The memory is fine and acceptable for use, but don't expect it to perform better than the Corsair I mentioned.