http://xbox360.ign.com/articles/617/617951p1.html There are three critical performance aspects of a console: Central Processing Unit (CPU) performance. The Xbox 360 CPU architecture has three times the general purpose processing power of the Cell. Graphics Processing Unit (GPU) performance The Xbox 360 GPU design is more flexible and it has more processing power than the PS3 GPU. Memory System Bandwidth The memory system bandwidth in Xbox 360 exceeds the PS3's by five times. Bandwidth The PS3 has 22.4 GB/s of GDDR3 bandwidth and 25.6 GB/s of RDRAM bandwidth for a total system bandwidth of 48 GB/s. The Xbox 360 has 22.4 GB/s of GDDR3 bandwidth and a 256 GB/s of EDRAM bandwidth for a total of 278.4 GB/s total system bandwidth.