IBM RS6000 7017-S70 Model S7A Overview The S70 Advanced is packaged as a Central Electronics Complex and an I/O rack. The S70 Advanced Central Electronics Complex entry configuration starts with a 4-way scalable SMP system that utilizes the 64-bit, 262 MHz, RS64 II* processor with 8 MB of Level 2 (L2) cache per processor. The 4-way SMP can be expanded to a 12-way SMP and the system memory can be expanded to 32 GB. Source: IBM