What will you write about big memory, hmmm ... Basically, the product came as described, and works perfectly. The more RAM you realize with intensive image editing + parallel other open programs already. However, I have a memory capacity of more than 11 GB never managed 16GB seem slightly exaggerated. For those who are interested, on my iMac no "Samsung" but "Elpida" memory was installed. Many report that Apple also "Samsung" used memory, which was not so in my case.