Windows 7 - ati 5850 vs. GTX580

I have just made this switch and realizing there isn't much solid information one can grab on google concerning this particular switch.

...yes there is a big difference.
Especially in the way of anti-aliasing where as on the 5850 AA means a massive hit to frame rate, with the gtx580 it doesn't seem to phase it at all.

I did a quick run through several games the largest and most immediately noticeable difference was in batman arkham city and SW:TOR.
The 5850 really struggled to get BAC going with the settings cranked up.
I got slow downs and strange behavior when using the ati card, with the nvidia card I've cranked everything as high as it can go and it just keeps going.

Also bear in mind I had my 5850 overclocked and I'm running the gtx580 at stock.

There is a general added crispness and the panning jitter I always got to some extent with the 5850 is also gone.
Mind you I'm speaking about most of these things on a level only a enthusiast would probably even notice. Except BAC where the difference was just mind blowing.

Well the 5850 is basically 2 generations old now, where as the 580 is the current generation.
As well as the fact that the GTX580 is currently the fastest single GPU on the market, only the dual core 590 and ati 6990 beat it.

There's the new Radeon 7970, which isn't widely available yet. It's supposed to be the fastest single GPU card on the market, for the moment. (I don't have one, and have no plans to acquire one.)

yeah i didnt mention that as its not out in the UK yet, nor have i seen benchmarks for it

As usual they are releasing the next generation of cards about a year before there is actually a need for them.