retargetable graphics (RTG), named "SAGA" or Super-AGA. The V4 is designed to replace the V2 V500 model as an accelerator, as well as operate entirely independently of any computer in a so-called "standalone mode". To accomplish this, Apollo Accelerators has built a cleanroom version of the AGA chipset and added direct support classic DB9-based joysticks and various low or full-speed USB 2.0 peripherals such as mice, keyboard and gamepads. Amiga AGA graphics are automatically upscaled to HDMI (576p) resolution and can switch automatically between classic and SAGA display modes for use with modern LCD monitors and televisions. As of August 2019, the AC68080 is the fastest 680x0-compatible Amiga processor with more than four times the performance of the previously fastest, the Motorola 68060. It is capable of 192.12 MIPS and 102.06 MFLOPS, while the Cyberstorm 68060 at 50 MHz was capable of only 39.29 MIPS and 28.02 MFLOPS. Performance gains are aided by using modern DDR3 memory which is capable of over 500 MiB/s in all memory regions. In contrast, the original Amiga processors were significantly bottlenecked accessing shared "chip" memory, achieving less than 3 MiB/s on OCS and ECS machines, and no more than 6.5 MiB/s on AGA machines with all chipsets having DMA disabled. The AC68080 is closed source, although it may be available for licensing. It is designed to use the original, closed-source Commodore AmigaOS (up to and including the most recent AmigaOS 3.1.4 release from Hyperion), but can also run AROS, EmuTOS, and FreeMiNT, as well as the Classic Macintosh OS. Amiga Components A number of suppliers have begun to spring up to provide components to allow users to build their own Amiga compatibles. This includes new motherboards and cases. intended to be combined with either an emulator or an FPGA. AmigaOS 4 systems The AmigaOS is known for combining the functionality of OS and window manager. It was primarily designed to run on PowerPC Amiga systems or hardware equipped with Cyberstorm PPC or BlizzardPPC accelerator boards as well as AmigaOne computers with PPC Teron installed. This system was only available in developer pre-releases for several years until the final release in December 2006. Since 2001, Hyperion Entertainment has been developing new AmigaOS 4 running on PowerPC-based systems. The contract between Amiga Inc. and this Belgian-German company only allowed for the availability of the commercial AmigaOS 4 license to computers with AmigaOne motherboards. AmigaOS 4 also