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One quick and dirty way to compare the computational horsepower of computers is to look at their FLOPS. In computing, FLOPS (or flops or flop/s) is an acronym meaning FLoating point Operations Per Second. The FLOPS is a measure of a computer's performance, especially in fields of scientific calculations that make heavy use of floating point calculations, similar to instructions per second.
There are two main formats for reporting the FLOPS of gaming systems which often contain multiple processors. The first method includes the central processor and graphics processing unit (GPU). The second method doesn't include the GPU. The former version is controversial
since the FLOPS of the GPU are not used in computations and some
therefore claim that the GPU should not be counted as it simply
represents a theoretical number. Others argue that GPUs are used in
computation - mainly based on a differnce of the definition of computation. Both sides agree that there is not yet a benchmark that can directly compare different systems.
With that caveat, here are the number:
Xbox | CPU: 1.5 GFLOPS | GPU: 5.8 GFLOPS | Combined: 7.3 GFLOPS
Xbox360 | CPU: 115 GFLOPS | GPU: 240 GFLOPS | Combined: 355 GFLOPS
Dreamcast | CPU: 1.4 GFLOPS | GPU: 0.1 GFLOPS | Combined: 1.5 GFLOPS
Wii | CPU: 60 GFLOPS | GPU: 1 GFLOPS | Combined: 61 GFLOPS
PS2 | CPU: 6 GFLOPS | GPU: 0 GFLOPS | Combined: 6 GFLOPS
PS3 | CPU: 218 GFLOPS | (GPU: 1800 GFLOPS) | (Combined: 2018 GFLOPS)
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