The PCLer describe if the access of data is align to 16 byte, programer will get a good performance, but the accessory is very little in modern CPU(i7).
1000W*100 times.
The point12 size is:12.
The point16 size is:16.
point12 took me 3405 clicks (3.405000 seconds).
point16 took me 3396 clicks (3.396000 seconds).