New PC-Will i need to download GW2 again in full

[kouk2002]

As title says, i will have a new pc in the next week or so, and since i got the digital copy i'm wondering if i will have to redownload the entire game.

I will have my current harddrive added to the new pc so im hoping i can just run it from there, even though i wont be on the OS installed on it.

The other hope is that i can simply copy the relevent directories to my new pc's hybrid drive for a bit of a performance boost and simplicity of it being on the right drive.

Any info about either option or anything i have yet to consider will be great.
Admittedly my connection is pretty fast compared to most people i know, and the first time it was downloaded within 3-4hrs, exact time i don't know as i had gone christmas shopping. Even so i'd rather not have to download it if i don't have to.

Also i will say if i did place this in the wrong section i'm sorry, the other sections didn't seem right, so i just put it in general.