2012 Base model, here. Just wanted to share some stuff that other people may be interested in. First, the OWC kit is officially works perfectly (says so on their site now, and I have personally installed an OCZ drive with it). Next, the pre-installed 500GB 5400rpm drive was surprisingly thin... according to the label on it, it's 7mm. One of my portable Seagate 1.5TB drives (after cracking open the enclosure) was noticeably thicker than normal... I wonder if a thicker drive could be installed alongside the thinner one. Alas, I installed a standard sized SSD, so I wasn't going to text it. Lastly, as I think I saw someone else post here, my Intel HD4000 VRAM jumped up to 756MB (from 512MB) after installing my 8GB of RAM. Anyone know if it jumps to 1GB with 16GB of RAM?