4Ghz i7, 3TB fusion, 8GB RAM (soon to be 32GB when I loot my 2012 iMac..), M295X. First impressions: 1.) It looks exactly like my 2012 27" iMac (no surprise!) 2.) It's a shame it boots with a black screen, since it drew attention to some unfortunate light bleed around the left side and top left of the screen (it boots at max brightness which doesn't help things, either...) 3.) It's like going from an iPhone 1/3G/3GS to an iPhone 4. Text is gorgeous. 4.) Screen is very uniformly white, much more so than the previous-gen screens. Not even a hint of the yellow tint toward the bottom of the screen (on my unit). 5.) Just as quiet so far, as my 2012 iMac, though I haven't run anything intensive as of yet. 6.) I got the spinning beachball of death when I created a new user, and had to force the system off (I could still adjust screen brightness etc, but for some reason the Create User screen just conked out). Interestingly, after the forced reboot it ran me through the initial boot screens again but my user name was then in use! Not a big deal for ME, since I want to scrap the OS install and install fresh (as I always do), but still... not ideal! 7.) I know this has come up a few times, but this is definitely, definitely 60hz in all display modes, including native 5120x2880 (accessed by holding down the Option key while clicking the display properties). Other than that, this is an iMac, through and through. The screen is really out of this world.