Recently I've been working with Scripting Dictionary Object a lot. So, I did a basic test and got just the result I had expected. #cs Speed test between - 1) _ARRAYADD 2) Scripting Dictionary Add 3) Array command (inbuilt) #ce #include <Timers.au3> #include <Array.au3> Global $count = 100000 ;~ Global $count = 1000000 ; Use if you can let your computer have fun for a few minutes Global $rnd = Random(0, 9, 1) & Random(0, 9, 1) & Random(0, 9, 1) & Random(0, 9, 1) &