I purchased a new 5K 27" 4.0 Ghz i7 iMac with 8 GB of Ram in early August. After placing my order for the iMac, I ordered the 4- 8 GB 32GB Ram Kit to load it up when I received the machine. The Ram came about a week before I received the iMac by UPS.
The Ram installation video was helpful and easy to follow. The installation process was very easy and the Mac is running great! This Ram is the exact 1867Mhz spec that Apple uses. While researching, I saw other Ram that only came up to 1866Mhz and lower. It was also a lesser price, but there were also some poor vendor reviews to accompany the lower price on the Ram.
My son has purchased from Other World Computing multiple times in the past and highly recommended them when I talked with him. This was my first experience with Other World and I am impressed!