We first conduct circuit-level simulation to extract timing
and energy of the proposed and baseline architectures. The
STT-RAM cache uses almost the same interface and peripheral
logic as the SRAM. Due to these similarities, we use CACTI
tool [2] to extract latency and energy values for peripheral logic
(at 65nm technology) added by the scaled latency and energy
consumption of the STT-RAM model reported in [12]. SRAM