Featuring eight processors, the Saturn's main central processing units are two Hitachi SH-2 microprocessors clocked at 28.6 MHz and capable of 56 MIPS. It uses a Motorola 68EC000 running at 11.3 MHz as a sound controller; a custom sound processor with an integrated Yamaha FH1 DSP running at 22.6 MHz capable of up to 32 sound channels with both FM synthesis and 16-bit PCM sampling at a maximum rate of 44.1 kHz; and two video display processors: the VDP1 (which handles sprites, textures and polygons) and the VDP2 (which handles backgrounds). Its double-speed CD-ROM drive is controlled by a dedicated Hitachi SH-1 processor to reduce load times. The System Control Unit (SCU), which controls all buses and functions as a co-processor of the main SH-2 CPU, has an internal DSP running at 14.3 MHz. It features a cartridge slot that allows for memory expansion, 16 Mbit of work random-access memory (RAM), 12 Mbit of video RAM, 4 Mbit of RAM for sound functions, 4 Mbit of CD buffer RAM and 256 Kbit (32 KB) of battery backup RAM. Its video output, provided by a stereo AV cable, displays at resolutions from 320×224 to 704×224 pixels, and can display up to 16.77 million colors simultaneously. The Saturn measures . It was packaged with an instruction manual, control pad, stereo AV cable, and 100 V AC power supply, with a power consumption of approximately 15W.