The actual thread that explains this is back about message #100 "How fast is a P4 Anyway", the PZ3 file (caled CPU Test) is in Freestuff if you would like to see how your computer stacks up. You load the file and you time the render, that simple. Anyway, here are the results posted by members, sorted. As the question was "How fast is a P4 ..", I would have liked to see more P4 results, we only had two, would have liked to see some more of the faster Celerons, too, I think they make a 1.2 now, don't they? We have plenty of Athlon results, though. Sorted fastest to slowest, faster is better! AMD 1800+ Athlon 512 Mb RAM Win XP Home 037 seconds AMD XP 1800+, 1GB DDR RAM, WinXP 044 seconds AMD 1.4 Ghz Athelon, 768 Mb RAM, Win 2000K - 044 seconds. AMD 1.4 Ghz Athelon 768 Mb RAM, Win 98 048 seconds AMD 1.3 GHz 256meg RAM Win 98 048 seconds Pentium 4 1.7Ghz 384RDRAM WinME 063 seconds Pentium 4 1.9 Ghz 1Gb RAM Win XP 057 seconds AMD XP 1800+ 1 GB DDR Windows 2000 Pro 068 seconds AMD 1700+ (Dual) 1Gb DDR Win XP Pro 073 seconds Pentium 3 850 Ghz 512 Mb RAM Win 98se 081 seconds Pentium 3 1GHz, 512 MB RAM, Windows XP Home 081 seconds. AMD 800 Mhz Athlon 768Mb Ram Win XP Pro 085 seconds Pentium Celeron 600 Mhz 256 Mb RAM Win 2000 Pro 095 seconds AMD 1.0 Ghz Athlon 768Mb RAM Win XP Pro 106 seconds AMD 1..0 Ghz Athelon 512 MB RAM Win98SE 107 seconds AMD 1Gb Athlon, 256Mb Ram, Win 98. 108 seconds AMD ? K6 146 Mb RAM 115 seconds Pentium 3 800MHz, 128MB RAM, Win98 134 seconds Pentium 3- 525Mhz 256 Mb RAM, Win 98 178 seconds Mac G3-500 Mhz 768 Mb RAM ? 215 seconds Mac G3-400 Mhz 256 Mb RAM O.S. 9.0.4, 343 seconds Mac G4 500 Mhz 832 Mb RAM O,S. 9.2.2 476 seconds No, I don't know why there is such a big variance, either.