Ik kwam bij Ace's Hardware deze FPU performance vergelijking van de Hitachi SH40-200 (chippie in de Sega Dreamcast) en Athlon-600 tegen:
So every four clockcycles, a transformation is done, and a vertice (line) is calculated. In other words, the SH4-4 can calculate 200 MHz / 4 = 50 Million vertices/s! The Athlon's 3DNow! can do 1 transformation every 14 cycles, or 600 MHz /14 = 42 Million vertices. As some vertices are shared between triangles (a polygon), I took two vertices per triangle. So now we can compare the maximum FPU power of the SH4 and the Athlon :
FPU Power Hitachi SH4 200 Athlon 600 3DNow! FPU peak 1.4 GFLOPS 2.4 GFLOPS Max. Vertices /s 50 Million 42 Million Max. triangles /s 25 Million 21 Million
Please note that the triangles are only transformed. If you want to compare with the geforce 256 (fully lit, clipped transformed triangles), you may divide the triangle rate by +/- 4. Well, the SH4 is slightly faster than an Athlon... Impressive! Until you combine a Geforce 256 with that Athlon of course...