Is the GTX 580 worth over £110 more than the GTX 570?

[barmyllama]

I currently have 2 MSI Twin frozr II GTX 470's in SLI.

For the most part they perfrom very well.

But......This is the second SLI setup I've had and I am still not convinced it's the best way to go. My main game BFBC2 scales reasonably well, but not great. Some games scale better than others, some run worse than with one card (Left4Dead2). I think that you are always better off with one high end card than 2 mid range cards.

So I think I've decided to sell both cards and get just a single high end card.

The GTX 580 is the fastest single GPU card available to me (I only use nVidia cards, no I am not a fanboy, it's just my preference)

The question is: Is the cheapest GTX580 worth the extra £110+ over the cheapest GTX 570?

Thanks for any replies.

 

[barmyllama]

The trouble with the 2 GTX 470's is because they are the Twin Frozr versions all the heat from both cards is exhausted into the case. I have a Coolermaster HAF X case and it still means my i7 920 CPU gets to 75-80 degrees with a Noctua NH-U12P H/S with two Noctu fans in push/pull at stock speeds. Without the extra heat from the two GFX cards those temps would be a lot lower. And as I said SLI is still isn't as bullet proof as it should be by now.

I realise that my current setup with be a bit faster than a single GTX 580, but I think that's worth it.

My only concern its the price versus performance of a GTX580 against a GTX 570.

 

[barmyllama]

Just got rid of an H50 because it just wasn't up to the job.