Do you think that the simple variance in how the time might be obtained between the two systems could have impact here?...Also possibly variances in 'intervals' at which time is obtainable?
I suppose it is also possible that some OS task could have preempted one of the runs and not others, or even have occurred at different places vis-a-vis the test runs. Was the PC hooked up to a network?...Was there some other task alive but inactive?...Was an Internet connect alive during the test?...that kind of thing.

I presume that you recompiled between VFP7/VFP8 runs.

For a loop of 20 MILLION I would say in any case that the impact of the differences observed is negligible.


>Hi
>
>

>T1=SECONDS()
>PRIVATE i
>FOR I=1 TO 20000000
>NEXT
>? SECONDS()-T1
>

>
>I run this program on my Compaq EVO P4 2,2Ghz and on a PC Athlon XP 2000+.
>
>Result:
>

>              | VFP6SP5  | VFP7SP1  | VFP8
>---------------------------------------------------
>P4 2.2GHZ     |  1.232 s |  1.191 s |  1.503 s
>---------------------------------------------------
>AMD XP 2000+  |          |  1.232 s |  1.171 s
>---------------------------------------------------
>

>
>VFP8 vs VFP7SP1 is 26% SLOWER on P4
>
>VFP8 vs VFP7SP1 is 5% FASTER on ATHLON XP
>
>Why ?
>
>Fabio