I've played Fallout New Vegas on my ps3 quite a bit (about 5 playthroughs).

And i bought it again for pc from steam on summer sale, just to play with the patch j.e. sawyer made.

But it runs on very low frame rates and there are some issues i never encountered in the ps3 version. Examples are: the never-ending caution mode when sneaking and DT icon dissappearing completely or fading on pip-boy screen.

Edit: yes, i tried turning graphic settings all the way down,
and my pc is decent, can run newer games without any problems

It is a total waste of time trying to compare this game to any other, besides to FO3 only. Let us decide whether or not you are correct about your system, especially whether the graphics solution is adequate.

What are the Fallout New Vegas system requirements?

Minimum System Requirements (VGAs corrected for Obsidian stupidity):

* Windows XP/Vista/Win7
* 1GB System RAM (XP)/ 2GB System RAM (Vista)
* 2.0 Ghz Dual Core processor
* Direct X 9.0c compliant video card with 256MB RAM
(NVIDIA 6800 "GS" or better/ ATI X1300XT or better)
{Added my note here, the X1600 Pro & up really, and
avoid both the Geforce 6800 SE, and the 6800 XT}
* 10 GBs of free hard drive space