In article <37ef2389@news.povray.org>, Nieminen Juha <war### [at] cctutfi> wrote:
>Scott Sexton & David Lewis <2b### [at] cheerfulcom> wrote:
>: I have a newish eMachine (low priced PC) with an AMD 333Mhz K2 that
>: renders all my old povray scenes slower than my laptop with a 120Mhz
>: Pentium (like 1/3 the speed rather than 3 times faster, as I would think
>: it should). This very slow rendering performance occurs under both the
>: Win98 and Mandrake Linux 6.0 OS installations on the eMachine so it does
>: not appear to be a OS or software installation problem to me. (Perhaps
>: the K2's L2 cache? but the laptop is older and only has smallish
>: processor cache anyway.)
>
:
>  Also I think that AMD has a quite slow FPU.

This is what I was told about my Evergreen 586 upgrade to my PC. A while ago I 
rendered that simple glass that I made in sPatch... it took 7 hours to render 
(setting max_trace_level high was part of the problem) but I was told then 
that the AMD FPUs aren't that fast, however I never did hear back from that 
person if they knew if it was all AMDs or just the older 586s....

This is something I need to look into. When I replace this PC with a new one 
(I'm thinking about keeping the machine I got and run Linux on it, but anyway) 
I don't want to go out and buy a poor performace FPU if I'm going to continue 
to do stuff with POV (and I think I'm hooked now.... "you know you've been 
raytracing too long when you setup a seperate configuration and icon for the 
POVray Newsgroups).

PHIL

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