CPU Graphics Synthesizer GPU Graphics Synthesizer as on SCPH39000. Older EE+GS that does not incorporate system memory (Found in Older Charcoal Black Slim PS2s. (SCPH-70001). ASIC that incorporates the EE, GS, and system memory (found in silver slim PS2s. Model SCPH-79000). The I/O Processor, containing a MIPS R3000-based CPU used in