To answer the question: I have a OWC Mercury Extreme 1.4 GHz CPU Upgrade in my "Gigabit Ethernet" G4 and it is running just fine. All you have to do is set the jumpers correctly.
https://eshop.macsales.com/item/Other%20World%20Computing/ME41400L2D/ I'm not sure, but I think the Sonnet upgrades doesn't use jumpers but does autodetection for the system bus speed and uses a software solution for the multiplicator (i.e. CPU clock speed). I personally prefer to set the jumpers. I think that it's never a good thing to depend on software to set the correct CPU speed. Sounds old-fashioned? Maybe. The Mercury Extreme 1.2 will be a good choice. You don't require to change anything else, except to replace the CPU and set the jumpers. No firmware update and no additional driver software is needed. Mac OS is supported from 9.2.1 and newer (which basically leaves you with 9.2.2) and Mac OS X is generally supported (all versions). I guess that the Mac OS 9 issue is due to the G4 being a 7455B instead of a 7450. There is only one disadvantage: the OWC Mercury Extreme 1.4 I have doesn't feature temperature sensors. And when you're unable to see the actual CPU temperature, it's hard to set a higher CPU clock speed. That's too bad, since it can be clocked to 1.6 GHz (100 Mhz system bus) for the Sawtooth and the Gigabit Ethernet, and up to 2.13 GHz (133 MHz system bus) for the Digital Audio and the QuickSilver. http://eshop.macsales.com/Tech/Load_Page.cfm?page=FAQ/extreme/extremesettings.html This would be a great speed gain, provided you can keep the CPU cool. But this' all hypothetical, since I cannot measure the temperature anyway. Cheers, Andreas ---------- Original message ---------- Subject: Re: Apple G4 CPU upgrade options Date: Dienstag, 25. August 2009N From: d p <[email protected]> To: "G3-5 List" <[email protected]> > Ok, I've been looking around, and right now I'm stuck between these > two: > > 1. Mercury Extreme G4/1.2GHz w/2MB L3 Cache. (I'm not sure the correct > model#) > 2. sonnet encore st g4 1200/2m (SG4-1200-2M) > > Does anyone have info/links on these two, or most importantly has > anyone had prior experience with either one of these. > > Why do I take it that the Sonnet is a "better" one? > > On Aug 23, 4:51 pm, mkoch <[email protected]> wrote: > > I have a G4 Dual 500 1.5Ghz Ram and complete mother board: the power > > supply died about 10 day ago; let me know if you are interested ? > > Michael > > > > On Aug 19, 2:11 pm, Christopher Clarke > > > > <[email protected]> wrote: > > > I know that you cant put a Dual onto a Non-Dual mobo without > > > modifications - as it needs more power etc. Also, I think all > > > QuickSilver G4 CPUs were interchangeable between same models (ie QS > > > 2001 could have any 2001 CPU etc.) > > > > > > Chris, > > > > > > On 19 Aug 2009, at 19:09, Dan Knight, LowEndMac.com wrote: > > > > Here's something we don't have on Low End Mac, something a reader > > > > just asked about: What models are CPUs pulled from other Power Macs > > > > compatible with? > > > > > > > > I know that 466 and 533 MHz CPUs from Digital Audio work with the 100 > > > > Mhz bus in Sawtooth and Mystic, and all G4 Power Macs with AGP video > > > > appear to use exactly the same CPU connector. > > > > > > > > This could create a market for pulled CPUs.... > > > > > > > > Looking forward to your feedback! > > > > > > > > Dan Knight, LowEndMac.com > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed Low End Mac's G3-5 List, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
