Micron WT:F ram, typically caps out at 2400Mhz, but my sample seems to be really good. Can even do 2133Mhz at 1000/500 mV (stock is 1200/600 at 1333Mhz) with slightly lower timings than this for a power saving profile.
Timings:
tRCD – 12
trap – 12
tRAS – 28
tRRD – 2
tRFC – 70
tRTW – 3
tWTR – 4
tREFI – Maxed out