Well, it has been a couple of weeks now since Sonnet released its new 1Ghz G4 upgrade daughtercard. I've been looking around for some user comments on the new card, and what the general feeling is about it vis-a-vis the PowerLogix 1Ghz upgrade. XLR8YOURMAC has a couple of postings from last week, but no one seems to have run a side-by-side comparison yet. So, my question is: Which is better? The Sonnet requires no software or special power connectors, but the PowerLogix does. The Sonnet uses DDR L3 cache memory, but PowerLogix chose SDR L3 memory, saying it makes no difference. The Sonnet uses the upgraded Mac's old heat sink, the PowerLogix provides a new one (and needs the power connect to run its fan). On the face of it, the Sonnet would seem to be the better technical solution, especially since they cost the same. I'm also wondering whether I should be looking at PowerLogix's dual CPU 800Mhz solution instead. It's a bit more expensive, but I understand MacOS X 10.2.1 now makes full use of both processors, so it may be a more robust, longer lasting upgrade. I just want to stretch out the life of my 450Mhz G4 Sawtooth with 896MB RAM until the GPUL Macs hit the mainstream a year from now. Your thoughts? Thanks.