Standard Sponza scene, 1024 x 768, render to screen, ultra rendering mode. Athlon XP1800+ (1533 Mhz) : 2h 11mn 40s Athlon XP2400+ (2000 Mhz) : 1h 41mn 07s Dual Athlon MP1800+ (2x1533 Mhz) : 1h 15mn 00s Pentium 4C @ 3300 Mhz : 1h 36mn 14s Dual Xeon (2 x 2800 Mhz) : 1h 00mn 19s As always with Vue, the AMD architecture is used more efficiently. It would be interesting to have an Athlon 64 result. Note that Vue 5 Esprit seems limited to 2 threads. Vue 4 Pro uses 4 threads on the Dual Xeon (2 physical CPU + 2 logical CPUs with hyperthreading), but Vue 5 uses only 2.