200% 1080p upscaling

[Forest_Penguin]

I am trying to figure out if I should get a 1440p or 2160p monitor. If I upscale a 1080p game at 200% am I running 2X the pixels of 1080p or 2X the vertical and horizontal pixels (3840 X 2160) ?

 

[boosted1g]

2x vertical and horizontal.

 

[Forest_Penguin]

2x vertical and horizontal.

so 3840 X 2160? thanks a lot