Dual 1GHz rip off....

altivec_2.0altivec_2.0
Posted:
in Current Mac Hardware edited January 2014
The Dual G4 1Ghz computer from apple is a bit of a rip off. In Photoshop tests and others the 933Mhz single processor computer was only about 20% slower. For a dual processor at faster clock speeds I would expect a 95% increase or more. Whats up with the 1GHZ DUALS! How come the difference??
«1

Comments

  • Reply 1 of 24
    applenutapplenut Posts: 5,768member
    [quote]Originally posted by Master:

    <strong>The Dual G4 1Ghz computer from apple is a bit of a rip off. In Photoshop tests and others the 933Mhz single processor computer was only about 20% slower. For a dual processor at faster clock speeds I would expect a 95% increase or more. Whats up with the 1GHZ DUALS! How come the difference??</strong><hr></blockquote>



    in other tests the dual 1Ghz is a lot faster. such as 3d rendering.



    but I think what you finally have realized is that the dual G4 1Ghz is starved for bandwidth. they need a faster bus. simple as that.



    Also, Photoshop isn't fully MP aware. Only some filters are so of course the difference won't be AS noticable as in some other apps
  • Reply 2 of 24
    fotnsfotns Posts: 301member
    A dual's increase in speed over a single CPU machine of the same mhz is usually around 30%. This has been shown in PCs and Macs. Adding another CPU does not double the speed. The dual 1Ghz scores over the 933Mhz seem to be in the expected ball park.
  • Reply 3 of 24
    applenutapplenut Posts: 5,768member
    [quote]Originally posted by FotNS:

    <strong>A dual's increase in speed over a single CPU machine of the same mhz is usually around 30%. This has been shown in PCs and Macs. Adding another CPU does not double the speed. The dual 1Ghz scores over the 933Mhz seem to be in the expected ball park.</strong><hr></blockquote>



    I don't know what OS you are basing that on but that is definitely wrong. there should be no problem with an OS that supports SMP of achieving at least 70% better performance. In fact FCP easily sees 70% increases in dual configurations.
  • Reply 4 of 24
    ghost_user_nameghost_user_name Posts: 22,667member
    [quote]Originally posted by FotNS:

    <strong>A dual's increase in speed over a single CPU machine of the same mhz is usually around 30%. This has been shown in PCs and Macs.</strong><hr></blockquote>You, sir, are either a troll or sorely misinformed.



    Quake III gets a 95% framerate boost with SMP enabled. Cinema 4D scenes render in about two-thirds to half the time with the second processor enabled. These are from my personal experience, not some sterile, fixed Photoshop-style bake-off. Shall I run some tests and post some specific numbers for you?



    [ 03-13-2002: Message edited by: starfleetX ]</p>
  • Reply 5 of 24
    eugeneeugene Posts: 8,254member
    I was encoding Sorenson 3 video in Cleaner all yesterday and I can tell you it encodes at almost more than 3.5x the FPS as a G4/450.
  • Reply 6 of 24
    fotnsfotns Posts: 301member
    [quote]Originally posted by starfleetX:

    <strong>Cinema 4D scenes render in about two-thirds to half the time with the second processor enabled. These are from my personal experience, not some sterile, fixed Photoshop-style bake-off. Shall I run some tests and post some specific numbers for you?



    [ 03-13-2002: Message edited by: starfleetX ]</strong><hr></blockquote>



    2/3=66%, So if a test took one minute with 1 CPU, 2 CPUs would do it 40 secs, a 33% speed increase!! <img src="graemlins/lol.gif" border="0" alt="[Laughing]" />



    [ 03-13-2002: Message edited by: FotNS ]



    [ 03-13-2002: Message edited by: FotNS ]</p>
  • Reply 7 of 24
    stimulistimuli Posts: 564member
    On a well-coded app, you'd get about 70-90% increase w/ 2 processors.
  • Reply 8 of 24
    onlookeronlooker Posts: 5,252member
    "So what's adobe's malfunction?"

    Should be the title of your thread. Apple made it clear that they were going to be using DP systems at WWDC last year, (or year before), and developers could captalize on this, and were encouraged to write MP aware code for OS 10.



    Why didn't Adobe?



    Just about everyone else has.
  • Reply 9 of 24
    leonisleonis Posts: 3,427member
    CPU usage on a Dual CPU system under OS X:



    Cleaner 5.11 WITH Sorenson Pro 3.1 - 195%



    QuickTime Player - 150% when playing movie, 190% when outputting QT file using DV codec, 195% when outtputing Sorenson 3 file WHEN Sorenson Pro is installed



    Cinema 4D XL 7 rendering - 195%



    Lightwave 7b - 175%



    BodyPaint 6.3 - 150%



    Final Cut Pro 3.01 - 150% to 185%



    Photoshop 7 - 99% to 130%



    After Effects 5.5 - Rarely reach over 110% (except a FEW filters) . Adobe claims the entire app is MP aware, but I think they are bullshitting us



    Illustrator 10 - Always below 105%



    iTunes - 180%



    IE - 130%



    Mozilla - 150%



    Toast 5.11 - 100% (burning CD), 130% (compressing MPEG-1 for VCD)



    Maya 3.5 - Always 100% (Maya is NOT MP aware at all)....ridiculious for a $7500 app



    VPC 5 - Always 100% (Not MP aware)



    Stuffit Deluxe 6.5 - 100% (Not MP aware)



    InDesign 2 - 100% to 110%



    Word &lt;---- Who cares



    Classic Startup (NOT the Classic environment) - 180%



    I think that's it for now.....



    [ 03-14-2002: Message edited by: Leonis ]</p>
  • Reply 10 of 24
    ghost_user_nameghost_user_name Posts: 22,667member
    [quote]Originally posted by FotNS:

    [QB]2/3=66%, So if a test took one minute with 1 CPU, 2 CPUs would do it 40 secs, a 33% speed increase!! <img src="graemlins/lol.gif" border="0" alt="[Laughing]" /> <hr></blockquote>Oops! That didn't exactly come out as I intended... Please see Leonis' detailed numbers.
  • Reply 11 of 24
    powerdocpowerdoc Posts: 8,123member
    [quote]Originally posted by Leonis:

    <strong>CPU usage on a Dual CPU system under OS X:





    VPC 5 - Always 100% (Not MP aware)





    [ 03-14-2002: Message edited by: Leonis ]</strong><hr></blockquote>



    Strange connectix said that VPC 5 support MP under mac OS X. Eugene i know that you have try VPC 5 under your dual GHZ mac : any clue about this ?
  • Reply 12 of 24
    fobiefobie Posts: 216member
    Leonis: You bought all those applications, right?



    <img src="graemlins/bugeye.gif" border="0" alt="[Skeptical]" />
  • Reply 13 of 24
    eugeneeugene Posts: 8,254member
    VPC does not seem to be MP aware in any case, even if I try to run two virtual machines at once.



    However, I almost never use just VPC...it's always in conjunction with another power hungry app.



    It would be nice if it was MP aware though.



    Fobie, considering Photoshop 7 is not yet available in retail form...



    [ 03-14-2002: Message edited by: Eugene ]</p>
  • Reply 14 of 24
    fobiefobie Posts: 216member
    I was sarcastic, ok?



    I WISH Photoshop 7 was avalible..
  • Reply 15 of 24
    leonisleonis Posts: 3,427member
    [quote]Originally posted by Fobie:

    <strong>Leonis: You bought all those applications, right?



    <img src="graemlins/bugeye.gif" border="0" alt="[Skeptical]" /> </strong><hr></blockquote>



    Over half of them - Yes



    A few of them - Got from my partner (real licence)



    Rest of them - either demo, NFR, or the "evaluation" versions (which means only use them for test drive, not using them for earning)
  • Reply 16 of 24
    ghost_user_nameghost_user_name Posts: 22,667member
    [quote]Originally posted by Eugene:

    <strong>VPC does not seem to be MP aware in any case, even if I try to run two virtual machines at once.</strong><hr></blockquote>IIRC, VPC is MP aware to a limited extent. I believe the networking code and disk access are done of separate threads from the main "CPU" thread. The CPU thread can obviously only use one processor, though, so it usually *seems* that the app isn't MP aware.
  • Reply 17 of 24
    michael greymichael grey Posts: 384member
    If you bought a MP Mac because you think it's going to be twice as fast, I'd hardly call that a rip-off. I'd call it being sorely misinformed.



    I'm probably a little defensive since I just bought my dual 1Ghz (and will probably be using it long after the G7s come out), but I still think people are confusing speed with productity.



    With my dualie I can work in Photoshop while simultaneously burning a CD and compressing a short video. While this might be possible on the 933, the performance hit on the MP isn't nearly as much, hence I'm done my tasks sooner. Sooner = faster, doesn't it?
  • Reply 18 of 24
    eugeneeugene Posts: 8,254member
    [quote]Originally posted by starfleetX:

    <strong>IIRC, VPC is MP aware to a limited extent. I believe the networking code and disk access are done of separate threads from the main "CPU" thread. The CPU thread can obviously only use one processor, though, so it usually *seems* that the app isn't MP aware.</strong><hr></blockquote>



    If I run two virtual machines at once, shouldn't VPC be smart enough to start two "main" threads? And that brings up another point...what about emulation of dual processor machines?..
  • Reply 19 of 24
    ghost_user_nameghost_user_name Posts: 22,667member
    [quote]Originally posted by Eugene:

    <strong>If I run two virtual machines at once, shouldn't VPC be smart enough to start two "main" threads? And that brings up another point...what about emulation of dual processor machines?.. </strong><hr></blockquote>Excellent points! As I said, it may just be threaded to a very *small* extent, but it is threaded nonetheless. It definitely should split virtual machines into separate threads... that's very strange indeed.
  • Reply 20 of 24
    applenutapplenut Posts: 5,768member
    [quote]Originally posted by starfleetX:

    <strong>IIRC, VPC is MP aware to a limited extent. I believe the networking code and disk access are done of separate threads from the main "CPU" thread. The CPU thread can obviously only use one processor, though, so it usually *seems* that the app isn't MP aware.</strong><hr></blockquote>



    according to Connectix the only thing that should be offloaded to the 2nd processor is video drawing.



    unfortunately it does not appear that is happening <img src="graemlins/hmmm.gif" border="0" alt="[Hmmm]" />
Sign In or Register to comment.