Hhmmm....
I'd heard that 512 meg sticks of Crucial had infineon chips, I thought there was some technical explanation for it. First I've heard of them using Samsung chips. Neither is junk, though. Didn't Micron buy out Samsung's memory operation?
What I'm sure about with crucial is that if I buy cas-2 pc133 sdram or cas-2.5 pc2100 ddr that's exactly what I'm getting, not something lesser that might run at that speed. SPD isn't just the easy way out, it's also a tool....
I have several sticks of crucial, micron chips, I bought cas-2 and they detect as cas-2. I have a stick of Kingmax bought as cas-2, but it detects as cas-3. Contacting the vendor, they asked if it would run cas-2 at 133, which it will, but that wasn't the point..... And that's not to say anything bad about Kingmax, either.
None of my systems will run reliably past 143fsb, but I suspect that the Kingmax would crap out before the Crucial.... Kingmax set the eeprom on my stick at cas-3 for a reason....