Hi all I am new to this forum. I recently bought a G4 digital audio mac that originally had (500mhz processor, 389 mb ram= a 250mb & a 133mb chips, and a 40gb HD, also a 32 mb raedon AGP graphics card & a dvd drive.) I spent some $ on it and upgrade it to: (1.4 ghz sonnet processor, added a 250 mb ram chip making it 645mb of ram. and a dvdrw drive replaced the stock dvdr) Heres my problem.... my computer is reading all the memory in the about this mac pane. But it is crashing often on games and copies files alot slower than my imac which only has 256mb ram. I tried using just one 256 chip by itself and starting the computer up and it runs fine. I also tried puting the 256 chip in the other two slots by itself to make sure the memory ports work properly. When I run just the 256 that was in it when it was purchased and the 133 also it runs fine but still downloads files super slow. I ran a program called "remember" and its log says test failed. Does anyone Have any suggestions or can explain to me how to make sure the new 256 chip I got from best buy by the way is the right one? I checked online b4 I bought the memory and it meets all the specs per the package. (PC133, all the pins line up, and its the same voltage). I just dont think a computer with a good amount of ram and a descent processor would crash so often and copy files so slow. Im running OSX tiger 10.4.6 I keep getting a KERNEL error when it crashes. Can anyone help me figure out how to make my computer scream like it should?