Intel iMac - what FPS to expect?

I'd like to know what kind of speed/frames per second I could expect from one of the current Intel based iMacs. Will it run well with the default graphic settings?

Will it run better under Windows XP via Bootcamp?

The company I work for is considering purchasing one (or two) of these iMacs, and they need to be good enough for the people using them to develop Second Life content (among other things).

Right now we have an older G5 iMac with Nvidia 5200 graphics card, and it's great for graphic design/web design/etc... but Second Life performance is pretty disappointing.

Thanks for any information and opinions.

that said, fps depends on many things -- where you are, what you're wearing, Draw distance etc etc

Put in max vRam, and 2 GIG min RAM and it runs great.

a few months ago someone very talented compared sl in bootcamp and native on the macbook pro. She posted the results here and and they came out virtually the same fps-wise

Apple recently announced a new lower-priced iMac as a replacement for the eMac. Unlike the other iMac models, it doesn't have Radeon X1600 graphics; it uses the integrated Intel 950, just like the new Mac Mini and the MacBook -- and like those systems, it is a MUCH worse performer in Second Life.

I've only been an SLer for 4 days so really I have nothing to compare against but my 1.83Ghz dual core MBP runs it fine. I haven't changed any settings so I guess I'm running on default.