We extend the full-system cycle-accurate Simics and GEMS simulation platforms to model the proposed hardware support. The system configurations are listed in Table 1. We used circuit level HSPICE simulation in 45-nm technology to extract the cell features of STT-RAM and 5TSRAM cell. We consider asymmetric characteristic of 5Tcell where writing ‘one’ is much slower than ‘zero’ on cell. The NVsim tool is used to estimate power, performance and area of SRAM and non-volatile caches. However, general NVsim source code does not model the 5T-SRAM cell and asymmetric STT-RAM write characteristics. Therefore we modified the NVsim source code and verified our results using paper.