I am currently in the process of upgrading my iMac for those who are interested. I bought it new in 2011 with the i7-2600 but I'm ordering the 2700k tomorrow. I've already got it apart. I have 2 OWC 240gb Extreme SSDs and a 4TB HDD. I also got 32gb RAM from OWC. I'm going to remove the optical drive, put the 2 SSDs in that bay and stripe them. I'm replacing the optical bay sata cable with a mini sata to sata cable that is going to the HDD in the main bay. That will of coarse be on the SATA 2 port and the 2 SSDs will be on the SATA 3 ports. While I'm inside, I've pulled everything apart and dusted. (it needed it) I also got rid of the 7 year old themal paste on the GPU and replaced it with good paste. QUESTION - I used paste, not pads, on the memory modules, bad idea???? Looks connected to me? I have sierra with my apps pre-installed on an SSD in this system with the 2600 that I'm going to clone over to the RAID array. Then I'll install a fresh copy of Windows 10 on the RAID array as well. I read once (back in the lion days) that Lion worked with the 2700k but mountain lion didn't. Hoping Sierra won't have any trouble. I have no plans to move to High Sierra anytime soon. I uploaded pics. Just thought this would be an interesting project some of you may want to follow. I'll keep it updated as time goes on. I'll finish it once the 2700K arrives.