WinRAR
WinRAR liked the G.SKILL PC6400 - it did extremely well for its official rating, WinRAR appears to be able to take better advantage of the low latency the modules offer - and when overclocked, it was practically neck and neck with much higher rated, far more expensive modules.

Doom 3
Doom 3 also liked the G.SKILL PC6400's - for Doom 3, its performance was excellent considering its rating and price; it noticably outperformed much higher rated modules.
