Hello forum - this is my first post on here and I only came across this thread while searching for something about Steam installation locations but I saw this and had to respond.
I've just bought a brand new 27in iMac which is pretty much the spec you've posted except:
a) Only the standard 8gb RAM - The price Apple wanted for upgrade was ridiculous. I'll upgrade that later
b) The 1TB Fusion drive - believe me, this thing is FAST. I really wish I had gone for the 3TB drive though
c) I have the wired keyboard with number pad as this has 2 extra USB ports - ideal for plugging in a gaming mouse
d) I use the Magic Pad
With regard to c) and d), I cannot get on with the Apple mouse and this is especially true when gaming. If I want to game via Steam on CS:GO or TF2, both of which play really well
on this iMac, I plug my Logitech G500 into the keyboard and use this. For everyday desktop work the Magic Pad with its gesture / multiple finger control is so much nicer to use than the mouse.
Although I do play the occasional game (and I'm going to epic.TEN http://www.epiclan.c...epic10
this weekend!), gaming is not the main reason I use any computer. I'm lucky enough to be in a position to have been able to buy the iMac AND
keep my old PC for LAN gaming. I wanted the iMac as my main computer for family stuff stuff such as photo and video processing, web browsing and other general activities. If I can play the occasional game on it I will but I don't think it will ever replace my gaming PC. I might be wrong but that remains to be seen. I certainly do not see myself taking a £2,200 iMac to a gaming LAN!
Although I've only had the iMac for 2 weeks, I have to say it's an absolute joy to use. It is taking me a while to get used to some of the things that I can do in Windows (at least before the awful Windows 8 came along) easily but it's an enjoyable learning curve. I've got Steam installed on it and added TF2 and CS:GO as they're games I enjoy and after I'd done some tweaking both look and play very well. I don't think I will boot camp the drive as with only 1TB I don't want to lose a big chunk of that to a Windows 7 installation but if you do decide to try an iMac, I would try and get the 3TB drive to give you more options. Next week, i.e. after this weekends LAN, I am going to install the trial version of Parallels 8, Windows 7 as a virtual machine and then Steam. I love racing games such as Trackmania, Grid, F1 2011 etc and I am very keen to see how these run on the iMac in a virtual environment. If these are playable through Parallels then I would have thought they'd be pretty good in Boot Camp.
However, as I mentioned earlier I didn't buy this as a replacement games machine. If I can play them on the iMac then I will - the 27in screen is simply gorgeous - and it's a shame that Apple don't let users run other kit through it to use as a monitor. If I could have hooked up my gaming PC to the iMac this would have been the ultimate "best of both worlds" solution for me. Ah well.
I'll try and remember to post again when I've installed and tested Parallels.
Good luck with your decision!