This is more of a general hardware post rather than a linux-specific one... I was just wondering if there was a such thing as a hybrid pc100/133 mem module. i had 384 mb in my machine, and today I brought home another 256mb stick of crucial pc133. I put the new stick in (accidentally) with the other 128 stick and it refused to boot... I took them out and realized that they were different speeds and thought "no wonder this doesn't work". so I put the 256 sticks in together and it works fine.

I just thought it was kinda wierd that the 256 stick worked with both a 100 and 133 stick. also the first three letters of the serial number are 'hyb' so ... if someone could either confirm or correct me that would be lovely.

-brandon

A 133 stick should have run fine on a motherboard set to 100. Underclocking has never been a problem, AFAIK. Maybe the sticks weren't seated properly?

Some picky motherboards designed for PC100 RAM chips will not work with PC133. I have one, an Elite (ECS) P3 board. It works flawlessly with PC100 RAM but put a PC133 stick in there and it just sits there and beeps.

As for "hybrid" PC100/PC133 RAM, I have never heard of it. Since the difference between PC100 and PC133 involves only designed speed and timings I suppose it is possible it exists though.


Håkan