brian, I use the giga designs GC5A-1250-D2 running at 1.3 ghz (I think the closest they have now is 5-1012u) in a g4 sawtooth agp 400 and it's been w/out a prob and blasting away for a couple years now, very happening and I can't recommend it enough. made a super huge difference, big time. worth it, fast, groovy - yes. very easy install and I work my machine hard but it's still totally solid! just my view, hope it might help. see http://gigadesigns.com/products.html on bass, watt http://hootpage.com > >Message-Id: <p06110401bd356f628df6@[10.10.1.140]> >Date: Tue, 3 Aug 2004 09:38:10 -0700 >From: "Brian L. Matthews" <blm at blmatthews.com> >Subject: Re: [G4] Processor upgrades... Worth it? Fast? Groovy, even? > >Which leads to my question, which company's processor upgrade should >I go with? I've got a 500Mhz G4 Sawtooth. I believe PowerLogix, OWC, >Giga, and Sonnet all make processor upgrades for my machine, and they >all sound good from the companies' web sites, but I'd like to hear >some real-world experiences before dropping what in all cases is a >decent chunk of change. > >Thanks, >Brian