No longer do you have to necessarily custom configure your iMac! For years Apple has been resistant to put modern solid state drives as standard in their iMacs. They had the Fusion drives, but with the demands of modern 64-bit operating systems and the software that runs within, solid state drives are a must. Well, now iMacs come with SSDs standard. This means you can go down to the Apple Store (when it reopens) and pick up an iMac and not be saddled with an ancient SATA or Fusion drive. They do offer the Fusion as an upgrade option, but it hardly is, so don't choose it. It's SSD all the way!