Dolphin.exe & DolphinWx.exe [Difference?]

[OneHitGamer]

I have the x64 build of dolphin and when i open the install directory i see the Dolphin.exe and DolphinWx.exe files. what is the difference and which one is best for me to use?

My Specs:
CPU: Intel i7 @ 2.7GHZ [8 cpus/16 cores]
3GB Ram @ 1033MHz [Machine holds maximum 24GB Ram]
ATi Radeon HD4850 @ 1GB VRam [Dedicated] & 2.2GB Shared
Windows Vista Home Premium x64