Vista - Random Questions

Alright, so i have a few questions for the good people of these forums involving Overclocking; a process that i have heard only a little about.

Now my main question is this. i have a GeForce 9400GT GPU, and its only supposed to have like 1 Gig of DDR2 Ram on there, but my PC reads it as 2.2 Gigs (Dunno where the .2 came from.) Is this a Bug, or a result of Overclocking? Now, i don't know what it is, so i never clocked it, so did it come Preoverclocked, or what is it? And if it ISN'T overclocking what are the Pro's and Con's of doing so?

Hello Israfel,
Use this tool and it will give you all the information you need on your GPU.

GPU-Z.0.3.4.exe

I dont think it would come OCed, if it was it would have said so on the box.
Where are you taking the info about the Ram from ?.

I got it from my PC specs one time. i don't remember Exactly where i saw it, since it was awhile ago, so i never really payed it any mind. This GPU program is giving the right specs tho, thanks ^^

Your welcome.