On Sep 4, 2006, at 12:21 AM, ethan gideon wrote: > Greetings All, > > I'm at that inevitable stage where I need to upgrade badly. I have > a G4 733 Digital Audio will be upgraded to a dual 1.6 -1.8 GHz. > Now, there are a great deal of options out there and I've used the > links on "LEM" home page to research. Still too much information!! > > What do fellow G4 users recommend? My budget for dual processors is > about $500 -$600. I quite like the Giga options for price and > general feedback but there are so many others- PowerLogix, Sonnet etc. My first thought is that you should sell the G4 and use the results in combination with the $600 and get a new Mac mini (waiting first for the 9/12 announcement of course); however, in answer to your question www.xlr8yourmac.com has lots of user feed back on CPU upgrades and a decent filtering mechanism for narrowing down the reviews you see. You need to aware of the differences between the CPU versions and the amounts and types and speeds of the cache(s) offered by the various upgrades. The only way you'll be able to reasonably choose between them is have a good idea of what you use your Mac for and find a knowledgeable vendor from whom to make your purchase. (Or find some benchmarks - see below.) See http://en.wikipedia.org/wiki/PowerPC_G4 for probably more than you want to know about the various flavors of the G4. It's worth skimming through the paragraph on the generation you're looking at. (7447a/b most likely.) Note also that a dual CPU may or may not be big win depending on what you use your machine for. If the applications you use are not multi- threaded (iTunes for instance) or you don't tend to do more than one CPU intensive thing at a time then the second CPU isn't going to do you much good. macsales.com has benchmark results for the upgrades they sell. Start here: http://eshop.macsales.com/benchmark/ and work your way to results you're interested in. You might also check places like xlr8yourmac and barefeats.com for CPU upgrade reviews. As to brand, you can always find a few people who have had a bad experience with any given vendor or brand, but I think that you really can't go wrong with any of the major brands. If you don't have a good local Mac shop (few and far between these days), then I would suggest macsales.com (aka OWC, aka OtherWordComputing) or smalldog.com. Phil