The low-energy accelerator (LEA) Performance and Energy Saving GUI, visually demonstrates the immediate benefit the LEA module integrated in some MSP430 microcontrollers (MCUs) can provide when performing vector-based signal processing operations. The tool allows users to quickly select an operation and test its performance in real-time on the MSP430FR5994 LaunchPad™ development kit. In addition, this tool takes advantage of MSP EnergyTrace™ technology to capture power data during function execution on the MCU. The operation is executed using both LEA and the CPU for a quick comparison of performance.