[IshKebab]

The rule is just "which one is easier to say? use that one". "A nvidia" is just wrong.

[sangnoir]

That entirely depends on how you pronounce "nvidia" in your head. I can imagine someone who has never heard the name spoken out loud think of it as "ni-vidia" (I have done worse) and "a Nividia" is easier than "an Nividia"

[IshKebab]

I mean, that's just pronouncing it wrong.

[sangnoir]

You are right: my point is that the easy way to say something can very well be the wrong way to say it.

[IshKebab]

I meant is it easier to say "a nvidia" or "an Nvidia", assuming you are pronouncing nVidia correctly.