An anonymous army captain once said: if the terrain and the map don't match, trust the terrain. Here is my proposal: Run Xbench with and without the erroneous sticks, and compare if the memory performance differs in any way. According to Mactracker, the sticks must comply with the following: PC133 3.3 V, unbuffered, 8-byte, non-parity 168-pin SDRAM. I have also read somewhere that they cannot have ECC (Error Correction Code). I hope some of this was helpful./Cheers Lars -------------- next part -------------- An HTML attachment was scrubbed... URL: http://listserver.themacintoshguy.com/pipermail/g4/attachments/20060525/3430d5e0/attachment.html