Newsgroup: it.comp.grafica.photoshop
Titolo: Pentium II vs PowerMac G3 : true Photoshop tests

Hi, Everybody,
For last 8 years, iąm trying to bench computers using Photoshop.
Here is my last high-end test: Pentium II vs PowerMAC G3 (PPC750) :
To Perform This test (you can try it on your own machine) i take the
sample Picture łMallorca˛ provided with Photoshop (in Samples folder).
I resize it to obtain an 3072 x 2048 pixel image = 18.0 MByte, and i saved
it in JPEG Format (maximum, 8), now i have my reference picture.
On my left i have an PowerMacintosh G3/266, with MacOS 8.1 , no extra
inits, 6Gb IDE Hard Disk, 128 MB of  Ram, original integrated  video,
dispay in 832*624 in 24 bits, this machine is powered by an PowerPC 750
(G3) at 266 Mhz with 512 k of backside cache running at 133 Mhz, 66 Mhz
Motherboard Bus, and of course Adobe PhotoShop 4.01 with 100 MB of
allocated memory.
On My right an Compaq Professional Workstation 6000, under Windows NT 4
pack 3, no extra process; all Power goes to PhotoShop, 4Gb Hard Disk, 128
MB Ram, an Matrox Millenium II video card, display in 1024*768 in 24 bits,
this machine is powered by an Pentium II running at 266 Mhz, with 512 Ko
of secondary cache, and of course Adobe PhotoShop 4.01  with 80 % of
allocated memory.
Now the tests, for last years i using the same tests, the resize &
rotation; represents intensive use of memory, Speed of bus, cache etc..
The filters tests (like polar coordinates) representing the ability of
processor to perform integer computing (no one of theses tests use
floating point).An important thing,check if in general preference of
Photoshop the pop-up menu is set to Bicubic.
Another important thing is that all computers that i have tested, have
always enought RamMemory (100MB), for doNot perform Swaping, so my tests
represents only the power of CPU, L2 cache,Motherboard and Ram, and do not
represents disk or SCSI controler performance, bye same way my tests does
no represents vidéo card perfomance, because my timmings does not includes
the display refresh .
All theses tests are perfomed many times, and checked after system re-boot
and photoshop reload. After each test you can or re-load the reference
Picture or cancel the last test.
All results are in seconds:
------------------------------------------------------------------
! Computer          !  P.Mac 8500  !   P.Mac G3   ! Compaq PW6000!
!----------------------------------------------------------------!
! Processor         ! PPC 604 @120 ! PPC G3 @ 266 !Pentium II 266!
!----------------------------------------------------------------!
! OS/Photoshop      !  8.1 / 4.01  !  8.1 / 4.01  ! NT 4 / 4.01  !
!----------------------------------------------------------------!
!...................!..............!..............!..............!
!----------------------------------------------------------------!
! Resize 150% (40Mb)!     36.35    !     10.90    !     11.45    !
!----------------------------------------------------------------!
! Resize to 1024x683!     17.05    !      3.90    !      4.75    !
!----------------------------------------------------------------!
! Rotate canvas 30° !     30.45    !     10.80    !     19.40    !
!----------------------------------------------------------------!
! Mode RVB->CMYK    !     13.90    !      6.25    !      5.70    !
!----------------------------------------------------------------!
! Gaussian Blur     !     14.25    !      5.80    !      5.85    !
!----------------------------------------------------------------!
! Polar Coord. R->P !     36.10    !     14.65    !     37.35    !
!----------------------------------------------------------------!
! Spherize norm.100%!     24.80    !     11.50    !     13.60    !
!----------------------------------------------------------------!
! Wind (left)       !     21.85    !     10.60    !     13.20    !
!----------------------------------------------------------------!
! Lighting Eff.Norm.!     39.45    !     14.65    !     20.50    !
!----------------------------------------------------------------!
! Sharpen Edges     !     12.40    !      5.30    !      7.05    !
!================================================================!
! Time for all      !    246.60    !     94.35    !    138.85    !
!----------------------------------------------------------------!
! Logarith. Average !     22.66    !      8.64    !      9.30    !
!----------------------------------------------------------------!
! OverAll Time Index!              !              !              !
! PPC 8500/120 =1   !      1       !      2.61    !      1.78    !
-----------------------------------------------------------------!
! Over. Average Ind !              !              !              !
! PPC 8500/120 =1   !      1       !      2.62    !      2.44    !
------------------------------------------------------------------
My Oppinion: It seems that what Apple says is true: in some case the G3 is
up to 2 times faster than the Pentium II, but the real average is between
10% to 50% faster at same clock speed.
And you may ask: what about the 604e (PowerMac 9600) at 300 Mhz ??, hum
itąs a little bit slower than the G3 (due to his slower Bus:50 Mhz) it
gave an logarithmique average of 2.46
Bye
Richard
sob...@calva.net
P.S: sorry for my mistakes in english (iąm French)

10% to 50% faster at same clock speed.
So what ?
I'm sorry but I don't understand the REAL purpose of you message.
Maybe you mean that PMacs are better than Pentiums ?
What about CPU prices ?
If you don't consider the price, you could go up to compare a
PentiumII with a Cray, and say that Cray is a better computer.
What about the fact that a computer is not only a CPU, but also video
boards, hard disks, RAM etc. ?
What about the fact that G3 is NOT an Apple CPU ?
Please, don't start an unuseful thread again.
Regards
Sandrino