>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
Fabio,
Whilst I know very little about the specifics of P4 and AMD, there may be a couple of reasons
(1) on chip instruction cache / instruction prefetch
(2) memory cache (in order to avoid the bus)
(3) bus speed
(4) memory access speed
(5) busy programs on the P4/AMD.
(6) There may even have been more interrupts. A lot can happen in one second
(7) ... those I'm forgetting
Gregory