10 best ways to fix a slow Mac OS and make it fast, even faster
macOS (formerly Mac OS X (1999-2012) or OS X (2012-2016)) is a series of graphical operating systems developed by Apple for Apple computing devices. It is the second most used desktop operating system, after Microsoft Windows.
Hardware Compatibility
A list of macOS versions, the supported systems on which they run, and their RAM requirements.
| Operating System | Supported Hardware | RAM Requirement |
|---|---|---|
| 10.14 | Officially: 64-bit Intel Macs released in 2010 (Mac Pro with Metal compatible GPU) or 2012 (all others) and later. | 2 GB |
| Most 2008 and newer devices using Mojave Patcher. | ||
| 10.12 - 10.13 | Officially: 64-bit Intel Macs released in 2009 and later. | |
| Most 2008 and newer devices using High Sierra or Sierra Patcher. | ||
| 10.8 - 10.11 | 64-bit Intel Macs released in 2009 (Xserve), 2007 (Prosumer and iMac), or 2008 (all others) and later. | |
| 10.7 | 64-bit Intel Macs. | |
| 10.6 | Intel Macs. | 1 GB |
| 10.5 | G4, G5 and Intel Macs at 867 MHz or faster. | 512 MB |
| 10.4 | Macs with FireWire and a New World ROM or Intel processor. | 256 MB |
| 10.3 | Macs with a New World ROM. | 128 MB |
| 10.0 - 10.2 | G3, G4 and G5 iBook and PowerBook, Power Mac and iMac (except PowerBook G3 "Kanga") |