exactly what is an EMB?

[idigweeds]

What do the initials stand for? What does it do? Why would I want it? What machine specs are required?

[Zach]

I'm guessing you mean't ENB? As for what it fully stands for idk. But an ENB is basically a graphical overhaul to the game you can find more information with Google.

Specs are going to vary you'll need some decent specs if you wanna have the enbs on and still play at 1080p 60 fps.

[Falro the Great]

It's ENB, and as far as anyone knows, it doesn't stand for anything.
It does many things, but the main points are: memory and VRAM management; addition of graphical effects with an ENB Preset (explain in a sec)
If you want the game to run more stable, and/or add prettier graphics.
For a basic ENBoost setup, anything that can run Skyrim. For a preset, depends - usually a preset will have specific requirements.

ENB presets are user-made conifgurations for the base ENB system that add graphics effects such as better Anti-Aliasing (AA), Ambient Occlusion (AO), Depth of Field (DoF), Godrays, and more.
ENBoost is an ENB configuration with only the memory tweaks, and no graphics modifications.

[Docsprock]

enbdev.com is a website ran by a graphics developer.

http://enbdev.com/index_en.html

It apparently is where we get our ENBs from.