I've got a bit of a dilema. I have an iMac DV SE with a 400 Mhz G3 processor with 768 Mb RAM, and want to upgrade it. Two companies offer replacement processors, PowerLogix (http://www.powerlogix.com/products2/iforcesl/index.html) and Technowarehouse (http://www.technowarehousellc.com/g4upforslloi.html). I can get a 900 Mhz G3 with 900 Mhz L2 cache for $330, or a 500 Mhz G4 with 1 MB of backside cache. I do some Photoshop/Illustrator work, run Jaguar, but mostly use my machine for web/chat. I plan on keeping it for maybe another year, then upgrading to a second generation PowerPC 970 PM. I just need a speed boost till then. Any comments would be welcome, as I'm having a tough time deciding whether the altivec is worth the 400 Mhz difference between the two processors.