If you want a good memory tester for OS X try MemTest, http://friskythecat.tripod.com/ The timing on the RAM being different theoretically shouldn't mess things up, but OS X is picky. CJ On Nov 14, 2003, at 11:14 AM, Franck wrote: > I've been plagued by Random Kernel panics. My DP 800 G4 would run > like a charm for weeks, then out of the blue, it will start crashing > with Kernel Panics. I'll repair permissions (one out of two runs > would crash), run fsck, run drive 10, disk defrag, mac Janitor, you > name it. Kernel panics still happen randomly. > Suspect # 1: Memory. I've ran Apple Software Extended memory Test on > my 1024 mb of ram (three chips 2-256, 1-512), it passes but I've > noticed that the memory profiler indicates that 2 chips are 10.0 cycle > n.s and one is 7.5 cycle n.s. > Could that difference in rating be the problem? Anyone on the list > could explain what it means? In advance thank you. > > ---------- > G4ist, a listserv for discussion of everything G4. > FAQ at <http://www.themacintoshguy.com/lists/G4.html>. > Send a message to <G4-DIGEST at themacintoshguy.com> to switch to the > digest. > > XRouter | Share your DSL or cable modem between multiple computers! > Dr. Bott | Now $139.99 <http://www.drbott.com/prod/xrouter.html> > > Dr. Bott LLC 4-port USB Hub in translucent Graphite! > Dr. Bott LLC <http://www.drbott.com/prod/ghub.html> > > Small Dog Electronics http://www.smalldog.com | Canon Digital > Cameras | > --Quicksilver & refurbished G4's arriving daily! | and Camcorders!! > | > > MacResQ Specials: LaCie SCSI CDR From $99! PowerBook 3400/200 Only > $879! Norton AntiVirus 6 Only $19! We Stock PARTS! > <http://www.macresq.com> > > OS X News, Dr.Mac, Forums, Tutorials, Tips, Hints, FAQ?s - > http://www.osxfaq.com >