You wasted your money with only a single stick of RAM.
The main benefit of going to the DDR4 is a Quad channel....which requires at least 4 sticks. That is why I went to 4x4gb.
Don't expect the Windows 7 system rating system to function or be updated, MS scrapped it in Windows 8.
I just bought a GA-X99-UD4, i7-5820k, and 4x4gb DDR4 2400.
Speccy doesn't give details on RAM. Speed. Latency. slots.
Why can't I upload a .speccy file?
CGIMANA-81.txt