The PowerPC G4 was a lie?!

Discussion in 'PowerPC Macs' started by Bob Bobeck, May 20, 2012.

  1. Bob Bobeck macrumors newbie

    May 20, 2012
    Just read this, says that the G4 was just a pumped-up 603.

    I'm still runnin a dual 1.42 Power Mac G4 FW 800 with Leopard 10.5.8.

    Wtf??? Is Apple screwin our eyes out???
  2. adcx64 macrumors 65816


    Nov 17, 2008
    That site is blatantly false. You can even see someone commented at the bottom making corrections. The G4 is built on a completely different architecture, the 7xxx series, not the 60x.
  3. Intell macrumors P6


    Jan 24, 2010
    I love how he calls AltiVec questionable. It's as if he doesn't even know what it can really do. Even now days people are still impressed by its power.
  4. adcx64 macrumors 65816


    Nov 17, 2008
    My point exactly. The guy obviously has a limited understanding of the architecture.
  5. Whargoul macrumors member

    Apr 27, 2012
    "Below I'll give some historical background, technical information, and plain facts that support my claim that the PowerPC G4 is really a second-generation processor, and the broader notion that the PowerPC family has not evolved significantly since 1995"

    So, the clean-sheet design G3 that could significantly beat a 604 of much higher MHz was not a new generation?
  6. SDub90 macrumors 6502a

    Nov 9, 2009
    Long Island
    I don't think it's a serious blog.... it's name is trollaxor and there's even a post all about ascii penes.
  7. raysfan81 macrumors 6502a


    Oct 6, 2009
    North Carolina
    Yeah... It really is unfortunate that many developers never took full advantage of its power.
  8. goMac macrumors 603

    Apr 15, 2004
    All PowerPCs are related, so I'm sure somewhere the G4 is related to the 603. Not really that big a deal.

    As a developer, I can tell you that Altivec is very hard to take advantage of. It simply doesn't work in a lot of cases. However, Intel has shipped something extremely similar to Altivec since the Pentium 2 called SSE, which really got powerful in the Pentium 4. So we didn't really lose Altivec with the Intel transition, in fact the same library is still in the system, but now it uses SSE, and SSE is also extremely fast.

    So in the end, because Intel has the same technology, I don't know if Altivec ended up being that big of a pro for the PowerPC.
  9. Zotaccian macrumors 6502a


    Apr 25, 2012
    G4 was based on G3:

    The design philosophy on MPC7400 is to change from the MPC750 base only where required to gain compelling multimedia and multiprocessor performance. MPC7400's core is essentially the same as the MPC750's, except that whereas the MPC750 has a 6-entry completion queue and has slower performance on some floating-point double-precision operations, MPC7400 has an 8-entry completion queue and a full double-precision FPU. MPC7400 also adds the AltiVec instruction set, has a new memory subsystem (MSS), and can interface to an improved bus, the MPX bus. The following sections discuss the major changes in more detail.

    When looking at benchmarks, it is quite obvious that G4 didnt stand a change against PC's with same or even bit lower priced PC's:

    I also find clock for clock comparisons worthless since it was Motorolas problem that it couldn't ramp up the clock speed the same way Intel and AMD could and when PC's were still cheaper or similarly price I think the only one who had problems was Apple. It was extremely wise choice to move to Intel.

    PS. I own both Intel based MBP and G5 based iMac.
  10. Lil Chillbil macrumors 65816

    Lil Chillbil

    Jan 30, 2012

    everything I know is a lie!!!

    just kidding!
  11. bax2003 macrumors 6502a


    Dec 25, 2011
    First CPU with SSE instruction was Pentium III (Slot 1, Katmai), followed by Coppermine......not Pentium 2.

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