Sonnet Dual G4 1.58ghz on the Bay

Discussion in 'PowerPC Macs' started by Surrat, May 17, 2015.

  1. Surrat, May 17, 2015
    Last edited: May 17, 2015

    Surrat macrumors 6502

    Surrat

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    #1
  2. bunnspecial macrumors 603

    bunnspecial

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    #2
    Thanks for posting, that certainly is a rare piece.

    With that said, I'd think that the factory 1.42 with 2mb L3/processor would probably do about as well in "real world" use as a 1.58 w/o L3.

    The lack of the heatsink is also a real deal killer for me.
     
  3. LightBulbFun macrumors 6502a

    LightBulbFun

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    #3
    Iv seen this on ebay for some time but the lack of a proper heat sink/fan and the fact a Dual 1.42GHz 7455B MDD with L3 cache is faster means its prolly not worth it (unless you want it Just for the fact of having a CPU upgrade for a MDD) Buns dual 1.8Ghz Machine with no L3 got c1400 in geekbench where as a dual 1.42Ghz MDD scores around about 1220 so i would think a stock 1.42Ghz MDD would in fact be faster then this CPU upgrade (also some 1.42Ghz MDDs can over clock to 1.58Ghz if your feeling like rabiz7)
     
  4. desantii macrumors 6502

    desantii

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    #4
    The benefit would be it runs cooler right? I see the heat sink in the picture(purple like all sonnets), so what is missing? says mounting hardware...

    Can these be overclocked? 1.8 maybe?
     
  5. LightBulbFun macrumors 6502a

    LightBulbFun

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    #5
    the heat sink in that picture is for an xserve G4 and those have forced air cooling right along the CPU heat sink so i would think it would overheat in an MDD. it might be able to OC to 1.8Ghz with the proper cooling but sonnet cards have a fixed speed like apple CPU cards do... no way to change it so you would have to find which Jumpers/resistors set the multiplier on the CPU
     
  6. eyoungren macrumors P6

    eyoungren

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    #6
    I have a 1.2Ghz single processor now. $300 and the issues that may come with this CPU is not worth an additional 308mhz even if it is a dual.

    And I have a Quicksilver, so I guess that leaves me out anyway.

    I can't imagine how this is much of an upgrade over 1.42Ghz capable MDDs though.
     
  7. bunnspecial macrumors 603

    bunnspecial

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    #7
    The Gigadesigns running at 1.6ghz(also no L3) scores about 2 points higher in Geekbench than a dual 1.42, or not really enough to worry about the difference.

    With that said, the faster FSB of the MDD with this upgrade should make some difference, but my experience is that L3 Cache makes much more of a difference in use.
     
  8. Cox Orange macrumors 68000

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    Jan 1, 2010
    #8
    Is it sure, that the sellers statement and the opinion about the heatsink/fan assembly is correct.
    I once saw a 2x1,8GHz MDX in an MDD and it had no fan and looked exactly like the one in the pdf from the OP.

    For me it looks more like the fan shown in the ebay picture is not an original part and was maybe given with the piece to the seller and the seller didn't know what it is, too.

    But maybe I am wrong and there is a special Xserve version of that CPU-Upgrade.

    On the other hand the big advantage of the 2x1,8GHz MDX over the stock 1,42GHz MDD is, that though the same speed, it is not as hot and so will not become as noisy.
     
  9. eyoungren macrumors P6

    eyoungren

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    #9
    At the bottom of the auction info the seller states this:
    To me that says all you get is the bare CPU board and that's it.
     
  10. Cox Orange macrumors 68000

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    #10
    Oh, I didn't read carefully in the auction text and missed the last bit about "not included". oops. Sorry.
     
  11. eyoungren macrumors P6

    eyoungren

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    #11
    No worries! :)
     
  12. KingKen1986 macrumors regular

    KingKen1986

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    #12
    Yeah I've had my eye on that since i picked up my MDD dual 867.
     
  13. Cox Orange macrumors 68000

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    #13
    Btw. I remember seeing an MDD with preinstalled Dual 1,8 MDX tagged as "not tested / doesn't power up" for 100,- on German Ebay last year. I was too hesitant with bidding though and had no room for it at the time.
     

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