Figure 7 shows the peak temperature of each processing unit while the MP3 decoding program is executed. As shown in the graph, the CPU and the GPU show higher temperature when the program
is executed on the GPU than the CPU. CPU temperature as well as GPU temperature increase when the application is executed on the GPU, since the CPU executes memory operations while the GPU
executes data operations in this case. According to our experimental results, we can know that the GPU cannot guarantee the superior efficiency than the CPU, even though the GPU shows better throughput than the CPU.