I knew this wouldn't come with memory pre-installed, so I opted for the 16GB memory add-on. I didn't realize this isn't real memory, but a special cache that primarily helps HDDs function as fusion drives so that they can compete better with SSDs. I bought an SSD to go with this, so the money I spent on the 16GB of Intel Optane memory was wasted (and even if I weren't using an SSD, I wouldn't have spent the extra money on the Optane memory if I had known that it's not actually RAM). I also had to spend extra time securing some actual RAM so that I could boot the computer. Anyway, I'm not a fan of product descriptions and add-ons that are so blatantly misleading that they border on fraud.