I’m running 6 instances on something like a 6600+ - I can’t recall for sure and am at work so I can’t check. I built the machine about 18 months ago – I just can’t remember what CPU I put in it. I’m running 12 GB of RAM, which helps a lot. I run 5 instances on the lowest possible setting on the second monitor, and my main session is usually on something like balanced or high performance. I turn off particle effects and that makes a big difference.

Sometimes InnerSpace launches sessions with the wrong sessions. It’s never predictable – it might be the right session one time and any of the other 5 the next. I am using the virtual file feature which attempts to keep track of each session’s graphical and sound settings. It’s a lot better than nothing – it just doesn’t work perfectly.

Sometimes, it seems as though that causes performance to lag even after I reduce the settings to their proper minimalist levels. Performance on my machine is not consistent; I always run 5 machines on extreme performance and 1 on something slightly higher – but the difference in lag can vary significantly even in the same zones. I attribute this to those startup config problems - loading too many textures into memory, etc. That’s just a guess, however.

I’m running Vista 64, and haven’t run into that BSOD problem. I don’t have power saving turned on – could it be an issue with that?

I think you could run 3 instances with your machine without too much trouble. I would terminate any unnecessary programs – especially the gawdawful IE which I still use simply because I’m too lazy to download a decent browser. Like someone else suggested, with the trial account option you don’t have much to lose.

If you do take the plunge, I highly recommend InnerSpace. It’s not free, like some other options, but works pretty well and is apparently approved by SOE so you don’t need to worry about getting banned. Good luck.