Dark Souls Prepare to Die edition
How is dark souls on pc compared to console?
The PC version isn't out yet, but all indications are that it is going to be a terrible port. From Software is a console only developer, and they were too cheap to outsource the PC port to someone competent. They have outright admitted that the game will have the same framerate issues the console version has, that the games renderer will be locked to 1280x720 resolution, and the framerate will be capped at 30FPS.
Given how little effort they are putting into the port, I doubt the game will be particularly stable at launch either.
If you have a console, I would say just get the console version of the game. At best, the PC version will be identical to the console version, except with a bit of extra content added for free. At worst, it could go down as one of the worst console to PC ports ever, joining the ranks of such games as GTA IV or Saints Row 2.
If you are patient, you can wait a couple of weeks for the PC port to launch and see what people have to say about it.