The "PERQ 3A" (otherwise known as the ICL 3300 Advanced Graphics Workstation) was developed by ICL as a replacement for the PERQ 2. The PERQ 3A had an all-new hardware architecture based around a 12.5 MHz Motorola 68020 microprocessor and 68881 floating-point unit, plus two AMD 29116A 32-bit bit slice processors which acted as graphics co-processors. It also had up to 2 MB of RAM, a SCSI hard disk and was housed in a desktop "mini-tower"-style enclosure. The operating system was a port of UNIX System V Release 2 called PNX 300. Prototype units were produced in 1985, but the project was cancelled before full production commenced (the project had run late and ICL decided it was a solution provider - it would sell Sun workstations as part of the solution).